[cxxmodules] Only remove "lib" prefix if it exists! From Yuka and me.

[vgvassilev]

No description provided.

[phsft-bot]

Starting build on slc6/gcc48, slc6-i686/gcc49, centos7/clang39, centos7/gcc62, centos7/gcc7, fedora28/native, ubuntu16/native, mac1013/native, windows10/vc15 with flags -Dccache=ON
How to customize builds

[vgvassilev]

@phsft-bot build just on slc6/gcc62 with flags -Druntime_cxxmodules=On -Dctest_test_exclude_none=on

[phsft-bot]

Starting build on slc6/gcc62 with flags -Dccache=ON -Druntime_cxxmodules=On -Dctest_test_exclude_none=on
How to customize builds

[phsft-bot]

Build failed on slc6/gcc62.
See console output.

Errors:

• 987/1653 Test [cxxmodules] Prevent RScanner from accessing hidden declarations. #915: tutorial-vecops-vo005_Combinations-py .............................................................***Failed Error regular expression found in output. Regex=[: error:] 14.12 sec
• 988/1653 Test [cxxmodules] Add missing module dependencies to test dictionaries #914: tutorial-vecops-vo004_SortAndSelect-py ............................................................***Failed Error regular expression found in output. Regex=[: error:] 14.55 sec

Failing tests:

• projectroot.bindings.pyroot.test.pyunittests_pyroot_pretty_printing
• projectroot.math.vecops.test.gtest_math_vecops_test_vecops_rvec
• projectroot.runtutorials.tutorial_vecops_vo005_Combinations_py
• projectroot.runtutorials.tutorial_vecops_vo004_SortAndSelect_py
• projectroot.roottest.cling.reflex.roottest_cling_reflex_make
• projectroot.roottest.root.tree.branches.roottest_root_tree_branches_make
• projectroot.roottest.root.tree.friend.roottest_root_tree_friend_make
• projectroot.roottest.root.treeformula.sync.roottest_root_treeformula_sync_make

[vgvassilev]

@Axel-Naumann, seems that the test is not fixed by this patch.

[vgvassilev]

Looks like this is fixed by #2721.