Adding directories to .gitignore

reduced basis tests, also various build directories I like to leave
around but would prefer not to see from 'git status.'
add tests to beautify rule, but not running it yet
Updated statistics for Jun 2013.
proper quoting of shell variable in tag message
Merge branch 'master' of https://github.com/libMesh/libmesh
default blocked DOF support to off for 0.9.2 release
Fixing typo in error message.