Improve the dialog for font encodings.

In case iconv is available, add only available encodings from the
full list to avoid possible confusion.

In any case (and especially if iconv isn't available) add UNICODE,
since this is internally provided by MPlayer.


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@36703 b3059339-0415-0410-9bf9-f77b7e298cf2
Improve the dialog for font encodings.

Allow a (preset) encoding that is not part of the list
of available encodings.

Insert this encoding into the selection list.


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@36704 b3059339-0415-0410-9bf9-f77b7e298cf2
Revise documentation of option '-font'.


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@36705 b3059339-0415-0410-9bf9-f77b7e298cf2
Cosmetic: Fix spacing.


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@36706 b3059339-0415-0410-9bf9-f77b7e298cf2