[build] Stop producing Xamarin.Android.Cecil.dll (#8489)

Fixes: #3132

Context: xamarin/monodroid@b934949

`Xamarin.Android.Cecil.dll` was created to avoid potential conflicts
and versioning issues with the copy of Cecil that Xamarin Studio was
using at the time; from April 2013:

> The issue is that when Xamarin Studio builds MSBuild-based
> projects, it does so through an intermediary
> `MonoDevelop.Projects.Formats.MSBuild.exe` process, which is
> responsible for using the `Microsoft.Build.*` assemblies to
> actually build the project.
> 
> The problem is that the directory containing
> `MonoDevelop.Projects.Formats.MSBuild.exe` --
> `/Applications/Xamarin Studio.app/Contents/MacOS/lib/monodevelop/bin`
> -- contains its own copy of `Mono.Cecil.dll`, and _that_ is the
> version that was used!
>
> Meaning that in order to fix a Xamarin.Android bug, we would need
> an updated Xamarin Studio release.

Considering our migration to .NET, and how infrequently we change our
`Mono.Cecil` reference these days, these potential issues are likely
no longer a concern.

Our unique `Xamarin.Android.Cecil.dll` copy has been removed in favor
of `Mono.Cecil` package references in all projects that depend on it.

Author: pjcollins

.external

@@ -1,2 +1,2 @@
-xamarin/monodroid:main@4d3ede83f699e1d127fed4a18de992819983d715
+xamarin/monodroid:main@c5f1e77bc732dc660090a8d59048f07de846ccd7
 mono/mono:2020-02@6dd9def57ce969ca04a0ecd9ef72c0a8f069112d

Configuration.props

@@ -190,10 +190,6 @@
     <AndroidSupportedTargetAotAbisForConditionalChecks Condition=" !$(AndroidSupportedTargetAotAbisForConditionalChecks.StartsWith (':')) " >:$(AndroidSupportedTargetAotAbisForConditionalChecks)</AndroidSupportedTargetAotAbisForConditionalChecks>
     <AndroidSupportedTargetAotAbisSplit>$(AndroidSupportedTargetAotAbis.Split(':'))</AndroidSupportedTargetAotAbisSplit>
   </PropertyGroup>
-  <PropertyGroup>
-    <RemapAssemblyRefToolExecutable>$(MSBuildThisFileDirectory)bin\Build$(Configuration)\remap-assembly-ref\remap-assembly-ref.dll</RemapAssemblyRefToolExecutable>
-    <RemapAssemblyRefTool>$(ManagedRuntime) $(ManagedRuntimeArgs) &quot;$(RemapAssemblyRefToolExecutable)&quot;</RemapAssemblyRefTool>
-  </PropertyGroup>
 
   <!-- Unit Test Properties -->
   <PropertyGroup>

Xamarin.Android.sln

@@ -11,8 +11,6 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "jnienv-gen", "build-tools\j
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "api-merge", "build-tools\api-merge\api-merge.csproj", "{3FC3E78B-F7D4-42EA-BBE8-4535DF42BFF8}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "remap-assembly-ref", "build-tools\remap-assembly-ref\remap-assembly-ref.csproj", "{C876DA71-8573-4CEF-9149-716D72455ED4}"
-EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Core", "Core", "{04E3E11E-B47D-4599-8AFC-50515A95E715}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Java.Interop", "external\Java.Interop\src\Java.Interop\Java.Interop.csproj", "{94BD81F7-B06F-4295-9636-F8A3B6BDC762}"
@@ -145,10 +143,6 @@ Global
 		{3FC3E78B-F7D4-42EA-BBE8-4535DF42BFF8}.Debug|AnyCPU.Build.0 = Debug|Any CPU
 		{3FC3E78B-F7D4-42EA-BBE8-4535DF42BFF8}.Release|AnyCPU.ActiveCfg = Release|Any CPU
 		{3FC3E78B-F7D4-42EA-BBE8-4535DF42BFF8}.Release|AnyCPU.Build.0 = Release|Any CPU
-		{C876DA71-8573-4CEF-9149-716D72455ED4}.Debug|AnyCPU.ActiveCfg = Debug|Any CPU
-		{C876DA71-8573-4CEF-9149-716D72455ED4}.Debug|AnyCPU.Build.0 = Debug|Any CPU
-		{C876DA71-8573-4CEF-9149-716D72455ED4}.Release|AnyCPU.ActiveCfg = Release|Any CPU
-		{C876DA71-8573-4CEF-9149-716D72455ED4}.Release|AnyCPU.Build.0 = Release|Any CPU
 		{94BD81F7-B06F-4295-9636-F8A3B6BDC762}.Debug|AnyCPU.ActiveCfg = Debug|Any CPU
 		{94BD81F7-B06F-4295-9636-F8A3B6BDC762}.Debug|AnyCPU.Build.0 = Debug|Any CPU
 		{94BD81F7-B06F-4295-9636-F8A3B6BDC762}.Release|AnyCPU.ActiveCfg = Release|Any CPU
@@ -361,7 +355,6 @@ Global
 		{1D4FC8F1-0DA4-4F38-BE68-11AEBA9A0EA4} = {04E3E11E-B47D-4599-8AFC-50515A95E715}
 		{AFB8F6D1-6EA9-42C3-950B-98F34C669AD2} = {E351F97D-EA4F-4E7F-AAA0-8EBB1F2A4A62}
 		{3FC3E78B-F7D4-42EA-BBE8-4535DF42BFF8} = {E351F97D-EA4F-4E7F-AAA0-8EBB1F2A4A62}
-		{C876DA71-8573-4CEF-9149-716D72455ED4} = {E351F97D-EA4F-4E7F-AAA0-8EBB1F2A4A62}
 		{94BD81F7-B06F-4295-9636-F8A3B6BDC762} = {04E3E11E-B47D-4599-8AFC-50515A95E715}
 		{B501D075-6183-4E1D-92C9-F7B5002475B1} = {04E3E11E-B47D-4599-8AFC-50515A95E715}
 		{D14A1B5C-2060-4930-92BE-F7190256C735} = {04E3E11E-B47D-4599-8AFC-50515A95E715}

build-tools/conjure-xamarin-android-cecil/conjure-xamarin-android-cecil.cs

@@ -145,10 +145,10 @@
     <_MSBuildFiles Include="@(_LocalizationLanguages->'$(MicrosoftAndroidSdkOutDir)%(Identity)\Xamarin.Android.Build.Tasks.resources.dll')" />
     <_MSBuildFiles Include="@(_LocalizationLanguages->'$(MicrosoftAndroidSdkOutDir)%(Identity)\Xamarin.Android.Tools.AndroidSdk.resources.dll')" />
     <_MSBuildFiles Include="$(MicrosoftAndroidSdkOutDir)Xamarin.Android.BuildInfo.txt" />
-    <_MSBuildFiles Include="$(MicrosoftAndroidSdkOutDir)Xamarin.Android.Cecil.dll" />
-    <_MSBuildFiles Include="$(MicrosoftAndroidSdkOutDir)Xamarin.Android.Cecil.pdb" />
-    <_MSBuildFiles Include="$(MicrosoftAndroidSdkOutDir)Xamarin.Android.Cecil.Mdb.dll" />
-    <_MSBuildFiles Include="$(MicrosoftAndroidSdkOutDir)Xamarin.Android.Cecil.Mdb.pdb" />
+    <_MSBuildFiles Include="$(MicrosoftAndroidSdkOutDir)Mono.Cecil.dll" />
+    <_MSBuildFiles Include="$(MicrosoftAndroidSdkOutDir)Mono.Cecil.pdb" />
+    <_MSBuildFiles Include="$(MicrosoftAndroidSdkOutDir)Mono.Cecil.Mdb.dll" />
+    <_MSBuildFiles Include="$(MicrosoftAndroidSdkOutDir)Mono.Cecil.Mdb.pdb" />
     <_MSBuildFiles Include="$(MicrosoftAndroidSdkOutDir)Xamarin.Android.Common.props" />
     <_MSBuildFiles Include="$(MicrosoftAndroidSdkOutDir)Xamarin.Android.Common.targets" />
     <_MSBuildFiles Include="$(MicrosoftAndroidSdkOutDir)Xamarin.Android.D8.targets" />

build-tools/conjure-xamarin-android-cecil/conjure-xamarin-android-cecil.csproj

@@ -2,7 +2,6 @@
 <Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <_XamarinAndroidCecilVersion>@MonoCecilVersion@</_XamarinAndroidCecilVersion>
-    <CecilSourceDirectory>$(MSBuildThisFileDirectory)..\..\external\mono\external\cecil</CecilSourceDirectory>
     <UtilityOutputFullPath>$(MSBuildThisFileDirectory)..\..\bin\$(Configuration)\lib\xamarin.android\xbuild\Xamarin\Android\</UtilityOutputFullPath>
     <UtilityOutputFullPathCoreApps>@MicrosoftAndroidSdkOutDir@</UtilityOutputFullPathCoreApps>
     <XamarinAndroidToolsDirectory>$(MSBuildThisFileDirectory)..\..\external\xamarin-android-tools</XamarinAndroidToolsDirectory>

build-tools/installers/create-installers.targets

@@ -51,7 +51,6 @@ static class KnownProperties
 		public const string Pkg7Zip_CommandLine                 = "Pkg7-Zip_CommandLine";
 		public const string PkgXamarin_LibZipSharp              = "PkgXamarin_LibZipSharp";
 		public const string ProductVersion                      = "ProductVersion";
-		public const string RemapAssemblyRefToolExecutable      = "RemapAssemblyRefToolExecutable";
 		public const string XABuildToolsFolder                  = "XABuildToolsFolder";
 		public const string XABuildToolsVersion                 = "XABuildToolsVersion";
 		public const string XABuildToolsPackagePrefixMacOS      = "XABuildToolsPackagePrefixMacOS";