Used for merge

*Delete the script codes.
*Modify the copy right
*Add --enable-winrtapi to configure
*Modify the doc/platform.texi
*change restrict to av_restrict, this should be a bug in compiling.
Should I find all *restrict and change it? I also find *restrict in "libavcodec\alpha\hpeldsp_alpha.c", but I'm not sure if it works well after I change.