Some rework on getstyle

- make it use wings functions, remove duplicated code from getstyle
- de-static necessary functions in wings
- add new wrmdirhier to wings
- rename WMMkDirHier to wmkdirhier (fits better)
- remove calling shell from getstyle (what were they thinking?)

i couldn't quite test getstyle (no idea about themes), but it still
basically works.

do back your ~/G dir up... wrmdirhier might eat it!

definitely needs testing, especially by people who have any idea
how themes work.

Some more getstyle

- missed a shell invocation
- maybe copyFile should be in wutils too...?

[crmafra: Folded second patch into the first]

WINGs/WINGs/WUtil.h

@@ -244,6 +244,9 @@ char* wfindfileinarray(WMPropList* array, char *file);
 
 char* wexpandpath(char *path);
 
+int wmkdirhier(const char *path);
+int wrmdirhier(const char *path);
+
 /* don't free the returned string */
 char* wgethomedir();