Ignore the nqp directory too in nqp-cc/
added nqp::open op and use MVM_open_* constants in tests
make getstdin, getstdout and getstderr argless
small fix and cleanup
added stubs for missing IO ops
fix mentioned MVM_open-constants
mapped nqp::setencoding
rename to setencoding, JimmyZ++
added nqp::readall_fh, and changed MVM_file_slurp to do open/readall/close
map nqp::printfh and make it take only two args
fixed mkdir to take permissions as 2nd arg
typo
added tell_fh, also tweak readallfh

readallfh used a mmap before, which doesnt tell about the position in the file.
Switched to apr_file_read which does that.
mapped nqp::eof
added and mapped noninteractive nqp::readlinefh
added and mapped nqp::stat

This replaces the duplicate eof moar-op, too.
use the same ordering like in core/oplist
uncomment bits that are now available
remove unneeded include which was accidentally added
fix .gitignore, dir nqp-cc was somehow included