[SOUP] Disable RC4

[SOUP] Disable RC4
https://bugs.webkit.org/show_bug.cgi?id=140014

Patch by Michael Catanzaro <mcatanzaro@igalia.com> on 2015-03-05
Reviewed by Carlos Garcia Campos.

Disallow RC4-based ciphersuites when performing TLS negotiation,
because it is no longer considered secure.

* NetworkProcess/EntryPoint/unix/NetworkProcessMain.cpp:
(main):
* WebProcess/EntryPoint/unix/WebProcessMain.cpp:
(main):

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@181073 268f45cc-cd09-0410-ab3c-d52691b4dbfc