Micro-optimization for normpath. I should probably leave that function alone now.
Micro-optimization for normpath. I should probably leave that function alone now.

git-svn-id: 74b2def6592cf29d88d1a5d33b5c4a2732d8507c@838 67cdc799-7952-0410-af00-57a81ceafa0f

alekibango/pyfilesystem,duedil-ltd/pyfilesystem,alekibango/pyfilesystem,pscottdevos/pyfilesystem,pscottdevos/pyfilesystem