Fix #1849
Merge pull request #1850 from sjinks/patch-1

Fix #1849
Fix #1852
Updated CHANGELOG
Regenerating build
Fix bug in zim_Phalcon_Http_Request_getHeader()

Close #1864
Merge pull request #1853 from sjinks/issue-1852

Make adapters implement their interfaces
Merge pull request #1859 from sjinks/fcall-opt

Static call optimization
Merge pull request #1866 from sjinks/issue-1864

Fix bug in zim_Phalcon_Http_Request_getHeader()