Vendor the CMake modules FSO actually used from the ~150-file rpavlik
submodule into cmake/, then drop the submodule:
- EnableExtraCompilerWarnings.cmake (toolchain warning flags)
- CreateLaunchers.cmake + its CleanDirectoryList.cmake dependency and
launcher-templates/ (IDE launcher generation for the game and FREDs)
- MSVCMultipleProcessCompile.cmake + its ListCombinations.cmake dependency
Also remove the dead cotire module-path entry and the vestigial
ENABLE_COTIRE option (cotire is never invoked and its directory no longer
exists), and repoint the submodule-initialized check at libRocket.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
