Fix possible crash occurring when libc does not support NULL printing.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

All the rectangle features have been ported to the native drawbox filter,
which has an equivalent syntax.

* qatar/master:
  aacdec: Drop some unused function arguments
  x86: Fix assembly with NASM
  x86: fmtconvert: Refactor cvtps2pi emulation through cpuflags

Conflicts:
	libavcodec/aacdec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'be923ed6':
  x86: fmtconvert: port to cpuflags
  x86: MMX2 ---> MMXEXT in macro names
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'a65bdceb':
  x86: mmx2 ---> mmxext in variable names

Conflicts:
	libswscale/utils.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '652f5185':
  x86: mmx2 ---> mmxext in comments and messages

Conflicts:
	libswscale/x86/swscale_template.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '04581c8c':
  x86: yasm: Use complete source path for macro helper %includes

Conflicts:
	Makefile
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Unlike YASM, NASM only looks for include files in the current
directory, not in the directory that included files reside in.
Signed-off-by: Diego Biurrun <diego@biurrun.de>

* commit '6860b408':
  x86: include x86inc.asm in x86util.asm
  cng: Reindent some incorrectly indented lines
  cngdec: Allow flushing the decoder
  cngdec: Make the dbov variable have the right unit
  cngdec: Fix the memset size to cover the full array
  cngdec: Update the LPC coefficients after averaging the reflection coefficients
  configure: fix print_config() with broke awks

Conflicts:
	libavcodec/x86/ac3dsp.asm
	libavcodec/x86/dct32.asm
	libavcodec/x86/deinterlace.asm
	libavcodec/x86/dsputil.asm
	libavcodec/x86/dsputilenc.asm
	libavcodec/x86/fft.asm
	libavcodec/x86/fmtconvert.asm
	libavcodec/x86/h264_chromamc.asm
	libavcodec/x86/h264_deblock.asm
	libavcodec/x86/h264_deblock_10bit.asm
	libavcodec/x86/h264_idct.asm
	libavcodec/x86/h264_idct_10bit.asm
	libavcodec/x86/h264_intrapred.asm
	libavcodec/x86/h264_intrapred_10bit.asm
	libavcodec/x86/h264_weight.asm
	libavcodec/x86/vc1dsp.asm
	libavcodec/x86/vp3dsp.asm
	libavcodec/x86/vp56dsp.asm
	libavcodec/x86/vp8dsp.asm
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Based on a libmpcodecs/vf_rectangle.c feature.

The filter has been ported to a native libavfilter filter.

The filter is a port of libmpcodecs/vf_field.c, since there is no common
code I relicensed it as LGPL, while keeping the original author
copyright.

Unlike YASM, NASM only looks for include files in the current
directory, not in the directory that included files reside in.
Signed-off-by: Diego Biurrun <diego@biurrun.de>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This is more consistent with the way we handle C #includes and
it simplifies the build system.

This is necessary to allow refactoring some x86util macros with cpuflags.

That interface is deprecated, and apparently useless.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Same functionality is provided by libswscale.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>