upgraded memcache and markdown2
R-2.9.10
reverted simplejson
R-2.9.11
fix cache.increment, added tests
improved coverage, fix bug with IS_LIST_OF and items not being strings
Merge pull request #502 from niphlod/fix/cache_and_tests

fix cache.increment, added tests
Merge pull request #503 from niphlod/tests/validators

improved coverage, fix bug with IS_LIST_OF and items not being strings
Merge branch 'master' of github.com:web2py/web2py