Extract variable out of loop

Fixes NoMethodError: `alias_method_chain` when requiring just active_support/core_ext

Updated comment to Rails 4

* Each file that uses `alias_method_chain` brings it in explicitly

better error message when app name is not passed in `rails new`

Prior to this change, for the following command:

    $ rails new

we received "Options should be given after the application name" as an error message.

This is outdated and should be "Application name should be provided in arguments".

Code cleanup for ActionDispatch::Flash#call

The nested `if` was replaced by using `presence` which takes account for
the given hash when it is `nil` or when it is empty. The `else` was
removed because what it was doing was to assign to `env[KEY]` the
value it already had.

Fix class and method name typos

Remove jruby-openssl from default Gemfile

[ci skip]

[ci skip]

Deprecate SchemaStatements#distinct, and make SchemaStatements#columns_for_distinct nodoc.
Conflicts:
	activerecord/CHANGELOG.md

* Remove some autolinks
* Fix the rendered result
* Change sql to SQL

[ci skip]

The error message uses English to say that the object should respond
to a certain method. You check that with respond_to, but that's not
English.

This makes this error message also consistent with the rest.

Conflicts:
	activesupport/lib/active_support/callbacks.rb

Replace multi_json with json

Adding documentation to the automatic inverse_of finder.

Avoid method missing when calling assume_migrated_upto_version (master)

Call assume_migrated_upto_version on connection to prevent it from first
being picked up in method_missing. In the base class, Migration,
method_missing expects the argument to be a table name, and calls
proper_table_name on the arguments before sending to connection. If
table_name_prefix or table_name_suffix is used, the schema version changes
to prefix_version_suffix, breaking `rake test:prepare`.

Fixes #10411.

read_attribute_before_type_cast should accept symbol

Don't modify args in TableDefinition#primary_key

Clean up unused method for `rake doc`.

This is the compination of #10057 and 10534.

Closes #10320

Escape of U+2028 and U+2029 in the JSON Encoder

Conflicts:
	activesupport/lib/active_support/json/encoding.rb

Since Ruby 2.0 is UTF-8 by default we need to explictly say that the
encoding of this file is US-ASCII