[dyncall] next shot at fixing the build on Strawberry Perl

Should work universally, but testing on OSX would be appreciated.
OSX 64 bit target for NativeCall
Add an nqp::getenvhash op.
Add nqp:: op for stable_set_type_check_mode.
Whitespace consistency.
Improve nqp.sh; nwc10++.
Simple make install; nqp.sh => nqp.
Implement nqp::getenvhash for JVM.
Implement nqp::[get|bind]hllsym for JVM.
Add missing chmod.
Initial REAMDE updates.

Also needs to provide build instructions for on the JVM.
Add blib to search paths, as on Parrot.
Enable serialization of QRPA.

Comes back as an RPA; can switch that over when we're ready.
Map HLL interop ops (though not implemented yet).
Implement nqp::settypehll[role]? on JVM.
Implement nqp::isbig_I.
Implement nqp::getpayload.
Add nqp::isint/nqp::isnum/nqp::isstr for Parrot.
Add nqp::isint/nqp::isnum/nqp::isstr for JVM.
Start building/installing P5Regex library on JVM.