miniupnpd/Makefile: remove -ansi flag
miniupnpd/Makefile: Link test programs with LIBS
miniupnpd: Use SA_LEN consistently
miniupnpc/minihttptestserver.c: use sigaction() instead of signal()

now accept() is interrupted by signals
miniupnpc/minihttptestserver.c: Have fun with favicon ;)
miniupnpc/minihttptestserver.c: small improvements