Fix PHP primitive default parameter type check

Summary: Allow primitive default values for parameters with primitive type hints

Reviewed By: @paroski

Differential Revision: D1668186
Add magic quotes to NEWS file

Summary: This is a BC break so should really be in NEWS.

Reviewed By: @JoelMarcey

Differential Revision: D1682085

Signature: t1:1682085:1415992796:591c354c4a2330828c74fd91b005b0c19dcfdf50