active_record: Quote numeric values compared to string columns.
Merge pull request #9208 from dylanahsmith/3-2-mysql-quote-numeric

[3.2] active_record: Quote numeric values compared to string columns.
Fix test failure for ruby 1.8.

BigDecimal.new needs to take a string rather than an integer in ruby 1.8.
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
fixing call to columns hash. run the damn tests when you backport!
use .ruby-version instead of tool specifc config
Merge pull request #9239 from senny/use_ruby_version_on_3_2

ignore .ruby-version instead of tool specifc config on 3-2-stable