Fix busted build on Parrot/Windows.
Make nqp::isconcrete false on null.

Brings Parrot impl in line with JVM impl.
Fix test description.
donaldh first hack on sockets for JVM.
Initial ops for socket IO using NIO.
Added server socket and process pipe to IO.
Add nqp::openpipe tests (JVM only)
Add nqp::setinputlinesep for JVM.
Fudged the chdir tests on jvm.
Merge pull request #121 from perl6/donaldh-sockets

Implement sync sockets, pipes on JVM using NIO.
support case-insensitivity for ranges in character classes
fetch libparrot.lib so that --gen-parrot works again
Check that after mixing the role nqp::istype works with the old type.
Fix typo in test description.
Unbust the CStr REPR.
Merge branch 'master' into nativecall-jvm
Stub the CArray and CStr REPRs.

We need these to get NativeCall.pm6 to compile.
Stub nqp::nativecallrefresh.

Also needed to get NativeCall.pm6 to compile.