NotOperator fix forgotten to include operators
Merge pull request #335 from ovr/some_fixes_04_12

Some fixes 04 12
Improved error messages in runtime
Using non-conflicting function names in runtime
x86 fixes in runtime
Using non-conflicting function names in runtime (2)
Processing visibility flags in methods
Fix #336 issue - Added support for default param value (static-constant-access), and added tests on it
Merge pull request #339 from ovr/336_issue

Fix #336 issue - Added support for default param value (static-constant-...
Allowing first level comments in code, fixing non-conflicting names in global module
Allowing arithmetic between zvals in runtime
Initial support for function calls
Fix function calls in runtime
Merge pull request #8 from phalcon/master

Merge zephir