x265: Use the encoder defaults

Reset the settings as it is done for x264.
texi2pod: Make it output a single encoding string

Intermixing =encoding utf-8 in the file can confuse some pod2man
implementations.
mpegts: Allow custom max resync size
Merge commit '4912b634b517c8acfc476c5d47f10be83fe7e18b'

* commit '4912b634b517c8acfc476c5d47f10be83fe7e18b':
  x265: Use the encoder defaults

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '94f084324e648876508bed546d950762f10b875e'

* commit '94f084324e648876508bed546d950762f10b875e':
  texi2pod: Make it output a single encoding string

Conflicts:
	doc/texi2pod.pl

See: 12ce58bebdff6bfae9c56dc785e3003968f93277
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '7968059e5c3cd8f91407f379c11bbf71a1b84c74'

* commit '7968059e5c3cd8f91407f379c11bbf71a1b84c74':
  mpegts: Allow custom max resync size

Conflicts:
	libavformat/mpegts.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
avformat/mpegts: Change order of structs to match 7968059e5c3cd8f91407f379c11bbf71a1b84c74

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>