v0.9.60
add upgrade_process.c
more work on connnection_call_handlers.c
more work on connection_call_handlers.c
add lib to ordinary build process, rename lib output to libmicrohttpd2.so, do not link libmicrohttpd2.so against gnutls/libgcrypt
adding ip counting and connection_add logic
more work on new src/lib implementation: connection_update_last_activity and connection_close handling
add remaining missing symbols for library to fully link