Re #1752: Add option to resolve hostname when trying to get network interface.



git-svn-id: http://svn.pjsip.org/repos/pjproject@4802 74dad513-b988-da41-8d7b-12977e46ad98
Misc (re #1751): Fixed unremoved pjsua2_demo.o after 'make clean'.



git-svn-id: http://svn.pjsip.org/repos/pjproject@4803 74dad513-b988-da41-8d7b-12977e46ad98