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/createExternalCoupledPatchGeometry/addRegionsOption.H

@@ -6,5 +6,5 @@
     (
         "regions",
         "(name1 .. nameN)",
-        "specify alternative mesh regions"
+        "Specify alternative mesh regions"
     );

applications/utilities/preProcessing/createExternalCoupledPatchGeometry/createExternalCoupledPatchGeometry.C

@@ -75,7 +75,7 @@ int main(int argc, char *argv[])
     (
         "commsDir",
         "dir",
-        "specify alternate communications directory. default is 'comms'"
+        "Specify alternate communications directory (default is 'comms')"
     );
     #include "setRootCase.H"
     #include "createTime.H"