More verbose comments in example configuration file
initialise port to 0, wildcard address test fails on OSX
initialize port only if addr is not NULL
Merge pull request #63 from bearnard/master

initialize port to 0, wildcard address test fails on OSX
Use pkg-config where available or detect the library using AC_LIB_HAVE_LINKFLAGS.

Signed-off-by: Nikos Mavrogiannopoulos <nmav@gnutls.org>
Added support for TLS Application Layer Protocol Negotiation (ALPN)

Signed-off-by: Nikos Mavrogiannopoulos <nmav@redhat.com>