configure.ac: replace == with =

Signed-off-by: Rafaël Carré <funman@videolan.org>
os2: add vlc_getProxyUrl()

Signed-off-by: Rafaël Carré <funman@videolan.org>
visual: remove non-sensical code

This mostly reverts commit fc5156cc00225de64eb9b8715809c6a84e48b35e.
This also fixes a use-after-free bug.
visual: privatize filter_sys_t, etc.
visual: do not keep unused fields
visual: remove write only field psz_args
visual: reduce symbols count
visual: clean up clean up code
visual: use dedicated thread (fixes #6229)

The new thread avoids blocking the audio pipeline while waiting for a
picture buffer. The Goom plugin already follows the same approach.
macosx: fix time slider status update, hide progress knob when buffering
macosx: fix fancy gradient view for nonembedded window
macosx: simplify and fix some minor bugs in equalizer code

still needs some testing

close #8375
macosx: do not translate string setting values in advanced prefs

close #6217
audiobar graph: remove default values in setting strings
macosx: remove completely unsensical and unneeded delocalize method
Qt: SoutInputBox: show decoded mrl (fix #8436 part1)
Qt: ConvertDialog: Escape filename in sout (fix #8436 part2)
update NEWS
fix error in getting proxy setting on darwin.

1. fix build error for ios.
2. fix vlc_getProxyUrl always return NULL on osx.

Signed-off-by: Felix Paul Kühne <fkuehne@videolan.org>
Update README

Close #8467