Framework for context independent sounffont management

Not tested yet!

src/cmdlib.cpp

@@ -1061,3 +1061,20 @@ void ScanDirectory(TArray<FFileList> &list, const char *dirpath)
 	delete[] argv[0];
 }
 #endif
+
+
+//==========================================================================
+//
+//
+//
+//==========================================================================
+
+bool IsAbsPath(const char *name)
+{
+    if (IsSeperator(name[0])) return true;
+#ifdef _WIN32
+    /* [A-Za-z]: (for Windows) */
+    if (isalpha(name[0]) && name[1] == ':')    return true;
+#endif /* _WIN32 */
+    return 0;
+}