* configure.ac, modules/gui/wxwidgets/interface.cpp: backport (where it applied to wx) [23985] COPYRIGHT_YEARS, [24271] hostname -s and [24272] HAVE_LIBPNG

Patch by Christopher Key. Attached is a patch that fixes a long standing problem whereby video encoded with vlc using x264 cannot be made playable on an iPhone. The issue was traced to the H264 profile value being incorrectly set, which this patch addresses.  Looking at the code, the trunk appears to have had a complete rewrite and should be unaffected, but this may be useful for a 0.8.6e release.

    - limited to Quartz video output (OpenGL refuses to work in fullscreen mode)
        - controlled by opengl.c, which is linked to Carbon for this purpose
    - removed blocker from intf.m
    - introduced memory management to VLCEmbeddedList (!!!)
    - sanity checks for vout.m