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]

src/misc.c

@@ -158,7 +158,6 @@ char *MakeCPPArgs(char *path)
 		if (buf[0] != '~') {
 			strcpy(fullpath, buf);
 		} else {
-			char *wgethomedir();
 			/* home is statically allocated. Don't free it! */
 			char *home = wgethomedir();