Our next_month gives November for some late dates in September of 1582.
Related methods, last_*, and in general advance have the same issues.
This commit fixes those, see the test suite for expected behavior, which
we still run in 1.9 to ensure it matches as we do with other methods
defined in Date in 1.9.

removed use of AR in AMo tests and removed testing of scopes (:on) in individual validation tests and moved them to their own test file

This commit breaks dumping a few tables, as the sessions table.
To reproduce, just create a new application and:

  rake db:sessions:create
  rake db:migrate
  rake db:test:prepare

And then look at the db/schema.rb file (ht: Sam Ruby).

This reverts commit 5b95730e.

Example:

  add_index(:accounts, :name, :name => 'by_name', :length => 10)
  => CREATE INDEX by_name ON accounts(name(10))

  add_index(:accounts, [:name, :surname], :name => 'by_name_surname', :length => {:name => 10, :surname => 15})
  => CREATE INDEX by_name_surname ON accounts(name(10), surname(15))
Signed-off-by: NPratik Naik <pratiknaik@gmail.com>

Make find_or_create and find_or_initialize work mixing explicit parameters and a hash [#4457 state:committed]
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

[#4437 state:committed]
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

[#4545 state:committed]
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

Signed-off-by: NPratik Naik <pratiknaik@gmail.com>

Update hidden namespace mechanism to work better with alternate choices and to support full namespaces (not just entire groups)

[#4532 state:committed]
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

Signed-off-by: NPratik Naik <pratiknaik@gmail.com>

[#4515 state:committed]
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

[#4514 state:committed]
Signed-off-by: NJeremy Kemper <jeremy@bitsweat.net>

typo 'main.cs' -> 'main.css', and textile typo 'h6(:has_many-group)' -> 'h6(#has_many-group)', and typo. missing 'if'

BigDecimal#as_json does not really specify the F format, it delegates that to whatever BigDecimal#to_s default format is, do the same in its test

Signed-off-by: NXavier Noria <fxn@hashref.com>

Signed-off-by: NJosé Valim <jose.valim@gmail.com>

Signed-off-by: NJosé Valim <jose.valim@gmail.com>