Add Backslashes to core function and constants calls about zendframework

[zfbot]

(Originally posted by: denixport on 03/19/12)

h6.on performance
I did simple benchmark, and it shows up to 8% improvement when calling global functions with slash
whether it's a significant improvement is up to discussion

h6.on security
Not sure it's a framework responsibility to address such "hacks"

[zfbot]

(Originally posted by: prolic on 07/09/12)

I would close this issue. This is on the todo-list of the php-dev-team. We should not change the code here.

[zfbot]

(Originally posted by: marc-mabe on 07/09/12)

This could be done by a script as we don't define functions or global constants in ZF

[zfbot]

This issue was ported from the ZF2 Jira Issue Tracker at
http://framework.zend.com/issues/browse/ZF2-227

Known GitHub users mentioned in the original message or comment:
@ralphschindler, @denixport, @prolic, @marc-mabe