[Babun] compile with g++

Babun is a shell that allows you to use Unix/Linux command in Windows system.

If you see the message "fatal error: stddef.h: No such file or directory" in babun while compiling cpp source file.

Just use the command to update

pact update gcc-core gcc-g++

More information about babun

http://garfieldduck.me/babun-sheng-lue-an-zhuang-cygwin-de-tong-ku/
http://www.open-open.com/lib/view/open1428543585104.html