Merge pull request #9208 from dylanahsmith/3-2-mysql-quote-numeric

[3.2] active_record: Quote numeric values compared to string columns.
Conflicts:
	activerecord/CHANGELOG.md
Merge pull request #9224 from dylanahsmith/bigdecimal-takes-string

[3.2] Fix test failure for ruby 1.8.
Bump rack dependency to 1.4.5

Conflicts:
	actionpack/actionpack.gemspec
fixing call to columns hash. run the damn tests when you backport!
Fix issue with attr_protected where malformed input could circumvent
protection

Fixes: CVE-2013-0276
remove ruby-prof
bumping version
Merge tag 'v3.2.12' into boxcast-fork

tagging 3.2.12