Store a variable per OutputStream instead of globals for
audio/video/extradata. This makes the code simpler and cleaner and fixes
2pass with multiple output streams.

Frame duplication now happens in vf_fps.

The DCBZL instruction is not available for the e500v1 and e500v2
architectures, but may still be recognized by the toolchain, so we
need to explicitly disable it for these architectures.

References: PowerPC™ e500 Core Family Reference Manual (Freescale)
Found-by: Ståle Kristoffersen <staalebk@ifi.uio.no>
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>

Unbreaks windows systems not providing pkgconf files.
Reported-By: Rafaël Carré <funman@videolan.org>

Signed-off-by: Tim Walker <tdskywalker@gmail.com>

libavcodec/lagarith.c:671:16: warning: '#' flag used with ‘%u’ gnu_printf format [-Wformat]

There is no point in populating NuvContext with another DSPContext.

Also split static and dynamic initialization bits to avoid running the
static initialization parts over and over.

Arch-specific optimizations are handled this way everywhere else.

Signed-off-by: Anton Khirnov <anton@khirnov.net>