add VS2012 projects for my personal use (using /LTCG, /MP, /RELEASE, /MT)
move astyle options to astyle.ini and use it in runastyle and runastyle.bat
astyle.ini: use --lineend=windows since when having autocrlf=true using --lineend=linux messes up the line endings
checkbufferoverrun.cpp: fix a /W4 MSVC warning
run astyle