Include additional files in distribution tarball (e.g. required for Windows builds).
Include "Makefile.vc7" in dist tarball.
Need to specify all additional sources in "EXTRA_DIST" so they don't get compiled on Linux.
Merge pull request #26 from fancycode/distribute_additional_files

Include additional files in distribution tarball
remove obsolete m4 macros
Merge branch 'image-local-context'
Merge branch 'image-local-context'
Fixed wrong variable name and spurious curly bracked on Windows.
Only enable malloc hook when compiling using gcc.
"InterlockedAdd" is only available on the 64bit compiler for Windows, use "InterlockedExchangeAdd" for 32bit.
only warn on CTB outside image area and continue decoding
removed unused registers from CPUID call
fail on unavailable reference frames
use CPUID intrinsic instead of inline assembly
reduce ref-pic-list sizes to required size
mark decoding errors
Initialize mutex/condition variables, lock/unlock around condition broadcast.
Only define and use log counter if trace logging is enabled. Causes simultaneous access warnings with running multithreaded otherwise.
optional Clipping in inline function
generate unavailable reference frames