CORE-13935
* Make LoadImage1bpp.c a sub-test of LoadImage.c for apitest.
* Add broken() for Vista x64 Testbot regression test fix based on reviewer comments.
GetModuleFileName() fails on LOAD_LIBRARY_AS_DATAFILE causing LoadImage to fail.
Use a fake filename for LR_SHARED (with same format as Windows).
This may not be a good design, but it does match Windows' behaviour.
+ Added test.