Zephir\Stubs\Generator Fixes

- constants print docblocks

- PHP_EQL fixes

- added support for public properties
Merge pull request #243 from zaets28rus/stubs_generator_support_for_public_properties

Stubs generator support for public properties
Merge pull request #244 from marciopaiva/master

[add] More suport to php_minfo_function
Fixes to function cache
Alias compilationContext in function cache
Enabling LTO in Apple clang