Add a .gitignore file based on .hgignore.

.gitignore

@@ -0,0 +1,58 @@
+/extra/reshax/Release/
+/extra/reshax/Debug/
+/extra/reshax/resources.h
+/extra/reshax/resources.cpp
+*.obj
+*.o
+*.dirstamp
+*.m4
+*.Po
+*.lo
+*.Plo
+*.dll
+*.user
+*.suo
+*/Release*
+*/Debug*
+*.lib
+*.ncb
+*.exe
+*.bat
+/platform/xcode/Build
+/platform/xcode/DerivedData
+/platform/xcode/ios/include
+/platform/xcode/ios/libraries
+/platform/xcode/ios/luajit-git
+*xcuserdata*
+*.DS_Store
+*.dylib
+*.dmg*
+demos
+*.orig
+.*.swp
+/autom4te.cache/
+/src/.libs/
+*~
+Makefile*
+config*
+libtool
+/platform/unix/ar-lib
+/platform/unix/compile
+/platform/unix/config.guess
+/platform/unix/config.sub
+/platform/unix/debian/changelog
+/platform/unix/debian/control
+/platform/unix/debian/rules
+/platform/unix/depcomp
+/platform/unix/install-sh
+/platform/unix/love.desktop
+/platform/unix/ltmain.sh
+/platform/unix/missing
+.lineno
+*.la
+*.Tpo
+*.rej
+*/.deps
+stamp-h1
+/src/love
+/src/tags