BUG: Never return a string containing a space " " from cmCTest::GetShortPathToFile - replace them with "_". DART cannot construct valid file names during dashboard rollup with space " " in the short path.

Source/cmCTest.cxx

@@ -2219,6 +2219,7 @@ std::string cmCTest::GetShortPathToFile(const char* cfname)
     }
 
   cmsys::SystemTools::ReplaceString(path, ":", "_");
+  cmsys::SystemTools::ReplaceString(path, " ", "_");
   return path;
 }