renamed the AI python timing module to freeorion_timing to avoid a name conflict with a timing module in Fedora python 2.7; renamed AI python tools module similarly out of abundance of caution

git-svn-id: svn://svn.code.sf.net/p/freeorion/code/trunk@7710 dbd5520b-6a0a-0410-a553-f54834df5b05