ENH: Improved implementation of INSTALL_FILES and INSTALL_PROGRAMS commands. Source paths can now be relative or full paths, and don't need to be in the same directory as the CMakeLists.txt file.

Source/cmInstallProgramsCommand.h

@@ -77,7 +77,9 @@ public:
   
   cmTypeMacro(cmInstallProgramsCommand, cmCommand);
 
- private:
+protected:
+  std::string FindInstallSource(const char* name) const;
+private:
   std::string m_TargetName;
   std::vector<std::string> m_FinalArgs;
 };