Add files from hscommon and qtlib

hscommon/plat.py

@@ -0,0 +1,16 @@
+# Created On: 2011/09/22
+# Copyright 2015 Hardcoded Software (http://www.hardcoded.net)
+# 
+# This software is licensed under the "GPLv3" License as described in the "LICENSE" file, 
+# which should be included with this package. The terms are also available at 
+# http://www.gnu.org/licenses/gpl-3.0.html
+
+# Yes, I know, there's the 'platform' unit for this kind of stuff, but the thing is that I got a
+# crash on startup once simply for importing this module and since then I don't trust it. One day,
+# I'll investigate the cause of that crash further.
+
+import sys
+
+ISWINDOWS = sys.platform == 'win32'
+ISOSX = sys.platform == 'darwin'
+ISLINUX = sys.platform.startswith('linux')