Update metasploit-data-models to 0.6.3

This updates activerecord to 3.2.13 due to recent vulns.
Update MDM in gemcache
Merge branch 'bturner-r7/update-mdm' into release

This lands the Mdm update to release. It shouldn't conflict with master
but if it does, please tell todb@metasploit.com how you resolved it.

[See #1620]
Merge branch 'release' into master

This is effectively an empty commit, but keeps master a descendant of
release.

Conflicts:
	db/schema.rb
	lib/gemcache/ruby/1.9.1/gems/metasploit_data_models-0.6.2/spec/dummy/db/schema.rb
	lib/gemcache/ruby/1.9.1/gems/metasploit_data_models-0.6.3/spec/dummy/db/schema.rb