[1.3, 1.4] fixed caching of 404 pages (closes #8339)
[1.3, 1.4] fixed caching of 404 pages (closes #8339)

git-svn-id: 510c49125dbf4d6f04771e17a3f478c0fe36ed73@28714 ee427ae8-e902-0410-961c-c3ed070cd9f9

aredridel/symfony1,filipc/symfony1,filipc/symfony1,simoncast/symfony1,augustinmerle/symfony1,issei-m/symfony1-1,sabaki-dev/symfony1,rock-symphony/rock-symphony,augustinmerle/symfony1,Recras/symfony1,onceit/symfony1,rock-symphony/rock-symphony,simoncast/symfony1,MDrollette/symfony1,ngscz/symfony1,issei-m/symfony1-1,simoncast/symfony1,ngscz/symfony1,aredridel/symfony1,Recras/symfony1,augustinmerle/symfony1,onceit/symfony1,ngscz/symfony1,sabaki-dev/symfony1,MDrollette/symfony1,Recras/symfony1,sabaki-dev/symfony1,onceit/symfony1,MDrollette/symfony1,filipc/symfony1,aredridel/symfony1,issei-m/symfony1-1,rock-symphony/rock-symphony