This one is slightly dangerous as it can happen over and over again during
normal operation.

with proper configure checks

* If input file in current dir specified, then retrieve CWD when we try to look for subtitle files. fixes #463
* When probing the autodetected files, probe them in the Locale, not in UTF-8. refs #528

* Revert the Quartz disabling.

(ie. most) automake users are used to.
If you DO want NOT to use maintainer mode you are free to pass
--disable-maintainer-mode to configure.

    __ppc64__ (meaning PowerPC).

    with --disable-decoder.

  * extras/contrib/src/Makefile: re-added --disable-codec flags (the FFMPEG
    tree on altair was outdated) but removed the duplicate vorbis one.

    there is no easy way to check for the presence of an executable, but
    trying to execute it ("foo --version >/dev/null") is usually safe.

    code.

* A few Mac OS X intf fixes. To be honest. we should rewrite the thing from scratch. it's a mess...