Idle fixes

- add new wglobaldefaultspathfordomain() to wings (replaces several
  hand-rolled individual implementations in utils/)
- make all of 'em handle -h|--help, -v|--version
- try making them not to nothing silently
- change various ways of knowing thyselves to using __progname
- generally try to make them feel similar (NOT right, similar --
  right is a completely different matter)

WINGs/WINGs/WUtil.h

@@ -298,6 +298,7 @@ WMRange wmkrange(int start, int count);
 char* wusergnusteppath();
 
 char* wdefaultspathfordomain(char *domain);
+char* wglobaldefaultspathfordomain(const char *domain);
 
 void wusleep(unsigned int microsec);
 

WINGs/userdefaults.c

@@ -80,6 +80,22 @@ char *wdefaultspathfordomain(char *domain)
 	return path;
 }
 
+/* XXX: doesn't quite belong to *user*defaults.c */
+#ifndef GLOBAL_DEFAULTS_SUBDIR
+#define GLOBAL_DEFAULTS_SUBDIR "WindowMaker"
+#endif
+char *wglobaldefaultspathfordomain(const char *domain)
+{
+	char *t = NULL;
+	size_t len;
+
+	len = strlen( SYSCONFDIR ) + strlen( GLOBAL_DEFAULTS_SUBDIR ) + strlen(domain) + 3;
+	t = wmalloc(len);
+	snprintf(t, len, "%s/%s/%s", SYSCONFDIR, GLOBAL_DEFAULTS_SUBDIR, domain);
+
+	return t;
+}
+
 static void
 #ifdef HAVE_ATEXIT
 saveDefaultsChanges(void)