Fixed a dependency MSVC issue: When changing a *T.cc file, MSVC will not recompile the corresponding explicit instantiation .cc file; Fixed by excluding all *T.cc files from the build by setting them in a separate source file group (my_t_impls) and setting the files properties to headers.

[git-p4: depot-paths = "//ReForm/ReForm/main/CoMISo/": change = 10392]