Fixes for issue 23: Added support for lstat and lstat64 calls in the StraceRunner

Changed the way farbicate determines which sys calls are valid to trace.

Reduced the regexp for stat to a single instance that covers all possible stat types (stat,stat64,lstat,lstat64)

git-svn-id: http://fabricate.googlecode.com/svn/trunk@164 7d55530a-7836-11de-8a01-315fa775be5f
Changed md5_hasher functionality on for python versions less than 3.2 on Windows to fallback to file name hash as a last resort

git-svn-id: http://fabricate.googlecode.com/svn/trunk@165 7d55530a-7836-11de-8a01-315fa775be5f
Updated md5_hasher description to correctly describe the windows with python < 3.2 fallback behaviour

git-svn-id: http://fabricate.googlecode.com/svn/trunk@166 7d55530a-7836-11de-8a01-315fa775be5f