[sfDoctrinePlugin] When merge schema files global parameters are not deep merged like Doctrine1

[alquerci]

This bug provide a different behaviour than Doctrine1:

https://github.com/LExpress/doctrine1/blob/v1.3.6/lib/Doctrine/Import/Schema.php#L330

How to reproduce?

connection: doctrine
options:
  charset: utf8

Foo:
  options:
    symfony:
      form: false

Expected

Foo:
  connection: doctrine
  options:
    charset: utf8
    symfony:
      form: false

Actual

Foo:
  connection: doctrine
  options:
    symfony:
      form: false

Track for fix

Using a deep merge instead of the simple array_merge() function can be a solution.

• https://github.com/LExpress/symfony1/blob/v1.5.11/lib/plugins/sfDoctrinePlugin/lib/task/sfDoctrineBaseTask.class.php#L151
• https://github.com/LExpress/symfony1/blob/v1.5.11/lib/plugins/sfDoctrinePlugin/lib/task/sfDoctrineBaseTask.class.php#L182