Squashed 'cmake/' content from commit 2c1a3532

CleanDirectoryList.cmake

CppcheckTargets.cmake

DoxygenTargets.cmake

DoxygenTargets.doxyfile.in

EnableExtraCompilerWarnings.cmake

EnableProfiling.cmake

FileCopyTargets.cmake

FindGDB.cmake

FindLAPACKLibs.cmake

FindMSVCRedist.cmake

FindOpenSG.cmake

FindOpenSGSupportlibs.cmake

FindVRPN.cmake

Findcppcheck.cmake

Findcppcheck.cpp

Findcutil.cmake

Findquatlib.cmake

GetCPUDetails.cmake

GetCompilerInfoString.cmake

GetGitRevisionDescription.cmake