[PATCH] Avoid traceback in a build script

Hello,

Please find attached a patch to avoid traceback if no argument is passed
for build/getversion.py script.

If no argument is passed, identify the header file automatically. This
is just better than a traceback.

[[
Avoid traceback if no argument is passed.

* build/getversion.py
  (main): Do not import os library. Identify the header file
  automatically, if it is not passed in command line.

Patch by: bhuvan
]]

-- 
Regards,
Bhuvaneswaran