Moved ancillary files to extras/ (fixes #1011)

extras/scripts/create-build-envs.sh

@@ -0,0 +1,29 @@
+#!/bin/bash
+
+export PATH="$PATH:/Applications/CMake.app/Contents/bin/"
+
+cd $(dirname $0)/../..
+ROOT=$(pwd)
+
+mkdir "build"
+cd build
+BUILD=$(pwd)
+
+build-env()
+{
+	cd $BUILD
+	mkdir "$1"
+	cd "$1"
+	cmake "$ROOT" -G "$2"
+}
+
+if [[ $(uname) == MINGW* ]]
+then
+	build-env "Make" "MinGW Makefiles"
+	build-env "SublimeText" "Sublime Text 2 - Ninja"
+	build-env "VisualStudio" "Visual Studio 14 2015"
+else
+	build-env "SublimeText" "Sublime Text 2 - Ninja"
+	build-env "Make" "Unix Makefiles"
+	build-env "Xcode" "Xcode"
+fi