Adding missing ZEPHIR_IS_BOOL
Added support for delcarate method for abstract (without {})
Added tests for abstract method declaration
ClassDefinition don't print body for abstract method
Merge pull request #331 from ovr/abstract_method_declaration_fix

Abstract method declaration fix
Added more types to 'declare'
Fix #319 Issue - Fix ClassProperty declary from Static-Constant-Access and added tests on it