Makefile.linux: update dependencies
miniupnpd/pcpserver.c: Removed IPV6_ADDR_COPY and other simplifications

modifications that were forgotten in commit e23c58997240a84abd8014affe9ef45cbe9c9125
miniupnpc: added test cases for XML parsing
Makefile.mingw: removed -enable-stdcall-fixup
fix miniupnpc.def
fix  miniupnpc/testupnpreplyparse.c