net/liveMedia: Update to 2024.09.25

Fix LICENSE block. This is LGPL 3.0 or greater. Remove the "MAT" license
which appears to have been added as a misinterpretation from when this
port had NO_CDROM defined. There's no need for a bogus license just
because the port is versioned by date.

Set previously undefined c++ standard as a precaution.

Simplify Makefile. Move CFLAGS (builds fine on amd64 with -fpic, so
there's no need to conditionalize it) and the openssl sub (MAKE_ENV
already defines OPENSSLLIB) out to files/config.fixed-freebsd. Respect
PREFIX with a more concise sub and no logic requiring <b.p.p.m>.

Strip binaries by subbing the install commands with BSD_INSTALL_* and
patch Makefile.head/tail in the post-patch target instead of the
generated Makefile in the post-configure target.

Pet portclippy(1).

Remove pkg-message that only provided very obious information.