Fix bigint bitops.  This should fix RT#115966 on perl6-p.
Add documentation stub for nqp::encode
Add documentation stub for nqp::readcharsfh
Merge pull request #169 from skids/master

Fix bigint bitops.  This should fix RT#115966 on perl6-p.
implement nqp::nativecallglobal on parrot
implement nqp::nativecallglobal on jvm