ENH: tag some options as 'advanced' (only shown with -help-full)

General:
    * -roots, -hostRoots, -fileHandler

Specific:
    * -to <coordinateSystem> -from <coordinateSystem>

- Display -help-compat when compatibility or ignored options are available

STYLE: capitalization of options text

applications/utilities/preProcessing/createZeroDirectory/createZeroDirectory.C

@@ -208,11 +208,11 @@ void createFieldFiles
 // Main program:
 int main(int argc, char *argv[])
 {
-    Foam::argList::addOption
+    argList::addOption
     (
         "templateDir",
         "file",
-        "read case set-up templates from specified location"
+        "Read case set-up templates from specified location"
     );
 
     #include "setRootCase.H"