Implemented Closure::apply
Added optional bool param $unbound_scoped to Closure::bind and ::bindTo
Added test for unbound_scoped
Rename ::apply to ::call for the sake of JS consistency
Fixed unbound scoped closure edge cases and added tests for them
Merge branch 'master' into Closure_apply
Fixed closure::bindTo bad args test
Merge branch 'master' into Closure_apply

Conflicts:
	Zend/zend_closures.c
	Zend/zend_closures.h
	Zend/zend_execute_API.c
	Zend/zend_vm_def.h
Fixed and cleaned up implementaton of Closure::call() for phpng
Removed unused variable
Don't allow unbound scoped closures; make ->call used passed object as scope
Old comment, whitespace
Comment clarification
Fixed issues spotted by code review
Accuracy
Revert "Fixed closure::bindTo bad args test"

This reverts commit 668d0683cdad18eae818165b6bb12f7176ce21de.
Just return, no need for RETURN_NULL()
Merge branch 'master' into Closure_apply
Fixed Closure::apply() for int64
NEWS, UPGRADING