Use 2 param version of nqp::shell
Merge branch 'nom' of github.com:rakudo/rakudo into chdir-emulation
Use nqp::shell(, , %env), Remove %*ENV specialness on JVM, Convert CWD to IO::Path
Merge branch 'shell-vars' of https://github.com/donaldh/rakudo into nom

Conflicts:
	tools/build/NQP_REVISION
Merge branch 'nom' of github.com:rakudo/rakudo into nom