Added plugin-generated model paths to symfony-1 ignore file.

Symfony.gitignore

@@ -5,7 +5,10 @@ config/databases.yml
 config/propel.ini
 data/sql/*
 lib/filter/doctrine/base/Base*
+lib/filter/doctrine/*Plugin/base/Base*
 lib/form/doctrine/base/Base*
+lib/form/doctrine/*Plugin/base/Base*
 lib/model/doctrine/base/Base*
+lib/model/doctrine/*Plugin/base/Base*
 lib/model/om/*
 lib/model/map/*