Support reading/writing JNIfTI and JData volume input/output in MCX

[fangq]

What need to be done:

• add zmat library (libzmat) source code tree to mcx
• decode "Shapes:{"_ArrayZipType_": .. ,"_ArrayZipData_"}" JData construct to allow users to use a single JSON file for both simulation settings and volumetric data with compression
• export simulation output (".mc2/.nii/.tx3") in JNIfTI format as a readable/extensible replacement to .nii
• export detected photon data output (".mch") in JSON/JData format to store explicit output subfield in a structure
• update makefile so that the new code can be compiled on Linux
• update makefile so that the new code can be compiled on Mac
• update makefile so that the new code can be compiled on Windows

[fangq]

Steps 1,2,3, 5 and 6 have now been completed.

add zmat library (libzmat) source code tree to mcx
decode "Shapes:{"ArrayZipType": .. ,"ArrayZipData"}" JData construct to allow users to use a single JSON file to both simulation settings and volumetric data with compression

export simulation output (".mc2/.nii/.tx3") in JNIfTI format as a readable/extensible replacement to .nii

8086175

update makefile so that the new code can be compiled on Linux

be151d0

update makefile so that the new code can be compiled on Mac

3532701