[APR transport] recvfrom() vs recvFrom()

[Lorenz Breu]

I think I found the problem. The Socket class in tomcat.jni specifies
recvFrom() whereas the native network.c implements recvfrom() (all
lowercase). Changing the java method name and rebuilding tomcat removed
the UnsatisfiedLink error (I mentioned this on the tomcat dev list...),
and I now also get the correct IP address back, however the port field
is not updated by recvfrom()...