removed two instances of add_column_options! from abstract_mysql_adapter

reworked rename_column_sql to remove add_column_options from schema_statements

changed to use new hash syntax.

When then PostgreSQL visitor was [added](https://github.com/rails/rails/commit/6b7fdf3bf3675a14eae74acc5241089308153a34)
`add_column` was no longer receiving the column options directly. This
caused the options to be lost along the way.

Don't modify args in TableDefinition#primary_key

This reverts commit abba61e2.

This reverts commit 8aa4603a.

Reverting the revert because I reverted the wrong thing! Fail.

This reverts commit 1fc6876b, reversing
changes made to 0268b5d8.

Reason: failing test

  1) Error:
test_valid_column(ActiveRecord::ConnectionAdapters::SQLite3AdapterTest):
NoMethodError: undefined method `column' for
    test/cases/adapters/sqlite3/sqlite3_adapter_test.rb:29:in
`test_valid_column'

[#8267]

The force flag suggests the original was probably copied
from some db/schema.rb. Thanks to Josh Susser for spotting
and reporting this.