8043200,8050158 :RC4 preference re-ordering.

[Seán Coffey]

Looking to backport this change to jdk7u-dev. Best security practice 
would be to lower the preference ordering of RC4 ciphersuites. This is 
work that's already in progress for JDK 8u and JDK 9.

For JDK 7u, I'd also like to introduce a compatibility flag which will 
reverse this change in case legacy applications run into issues with the 
preference re-ordering. It won't be available in 8u & 9. CCC approval 
has been granted.

http://cr.openjdk.java.net/~coffeys/webrev.rc4.7u.v2/webrev/

regards,
Sean.