BUG: Fixed @ONLY configuration to not try to parse ${} syntax at all. This fixes the original fix to bug#4393 and adds a test.

Tests/StringFileTest/StringFile.cxx

@@ -24,6 +24,8 @@ int main(int, char*[])
   res += CheckMethod(tuvar, "CMAKE");
   res += CheckMethod(tlvar, "cmake");
   res += CheckMethod(relpath, "../../X11R6/bin/xnest");
+  res += CheckMethod(configvar,
+                     "@$@$junk =~ s/#$xyz#/$foo_bar{$wibble}->{$xyz}/;@@");
   
   return res;
 }