No need to execute *.cpp
Remove not used files
Makefile: build yuv2jpeg and yuvsubtitle by default, cosmetics

Remove trailing spaces, sort MAIN_TARGETS
Remove trailing spaces
libav-bitrate.c: do not mix tabs and spaces
Merge pull request #20 from Nikoli/build_system

Makefile: build yuv2jpeg and yuvsubtitle by default, cosmetics
Merge pull request #21 from Nikoli/cosmetics

Cosmetics. Code cleanup.