WUtil: New function wuserdatapath() to get path for application data

Returns the path in the user's GNUstep library: ~/GNUstep/Library

WINGs/WINGs/WUtil.h

@@ -864,6 +864,7 @@ Bool WMWritePropListToFile(WMPropList *plist, const char *path);
 
 /* don't free the returned string */
 const char* wusergnusteppath(void);
+const char* wuserdatapath(void);
 
 /* Free the returned string when you no longer need it */
 char* wdefaultspathfordomain(const char *domain);

WINGs/userdefaults.c

@@ -81,6 +81,19 @@ const char *wusergnusteppath()
 	return path;
 }
 
+const char *wuserdatapath(void)
+{
+	static char *path = NULL;
+
+	if (path)
+		/* Value have been already computed, re-use it */
+		return path;
+
+	path = wstrconcat(wusergnusteppath(), "/" USERDATA_SUBDIR);
+
+	return path;
+}
+
 char *wdefaultspathfordomain(const char *domain)
 {
 	char *path;