Update CMake modules to use a search path with optional local overrides in case of missing or out-of-date system files (Debian Etch).
Update CMake modules to use a search path with optional local overrides in case of missing
or out-of-date system files (Debian Etch).


jdelgadoalfonso/openpgm,jdelgadoalfonso/openpgm,jdelgadoalfonso/openpgm,jdelgadoalfonso/openpgm,jdelgadoalfonso/openpgm,jdelgadoalfonso/openpgm