v8 on mingw

1. install python
2. install scons
3. install svn
4. checkout v8 svn checkout http://v8.googlecode.com/svn/trunk/ v8
5. edit Sconstruct and comment out -Werror (maybe there's a way to disable it from command line) vim v8/SConstruct
6. cd v8
7. scons
8. g++ -Iinclude samples\shell.cc libv8.a -lwinmm -lws2_32 -o v8.exe