bump some versions.

libpng 1.5.14 to 1.5.18
libvpx 1.3.0 to git
libdvdread 4.2.1-rc2 to 4.9.9
libdvdnav 4.2.1-rc2 to 4.2.1
libogg 1.3.0 to 1.3.1
libvoribs 1.3.3 to 1.3.4
orc 0.4.16 to 0.4.18
libbluray 0.2.3 to 0.5.0
gnutls 3.2.5 to 3.2.14
xvidcore 1.3.2 to 1.3.3
fontconfig 2.10.95 to 2.11.1
freetype 2.4.10 to 2.5.3
openssl 1.0.1e to 1.0.1g
vo-aacenc 0.1.2 to 0.1.3
libmodplug 0.8.8.4 to 0.8.8.5

enabled x265 again