npp: on unixes use an implementation based on FIFOs instead of mono's broken named pipes
npp: initial implementation of foreign reply channel support (windows only)
npp: use single constant for protocol name
npp: foreign reply channel support on unix version
npp: add utcp,btcp to foreign reply channel testing protocols
npp: proxified reply channel
Added npp protocol for foreign reply channel tests in btcp & utcp
npp: added appdomain tests
fixed resource release in some tests
the named pipes protocol push