Fix uninitialized variable

Caused if the timebase is not specified in stats file. Found by Clang.
Fix ARM asm compilation with Apple assembler
Fix input support from named pipes in Windows
CLI: Avoid redundant 16-bit upconversions in piped raw input

It's not possible to seek in pipes, so if we want to skip frames we have to read and
discard unused ones. It's pointless to do bit-depth upconversions in those frames.
Use 8x16c wrappers with x86 asm functions for 4:2:2 with high bit depth
Remove tools/xyuv.c

It's an old stand-alone application that isn't relevant to x264.
Bump dates to 2014

Also update AUTHORS file and my e-mail address in the headers of various files.
Avoid some unneccesary memory loads in macroblock_encode
Fix quantization factor allocation

We don't need to wastefully allocate quant tables above QP_MAX_SPEC; they're
never used.
v210 input support

Assembly based on code by Henrik Gramner and Loren Merritt.
Add support for AVC-Intra Class 200
x86inc: speed up compilation with yasm

Work around yasm's inefficiency with handling large numbers of variables
in the global scope.