Turn on Closure compilers SIMPLE_OPTIMIZATIONS. Slightly change how svgedit namespace is set up in each module

git-svn-id: http://svg-edit.googlecode.com/svn/trunk@1931 eee81c28-f429-11dd-99c0-75d572ba1ddd

editor/select.js

@@ -13,11 +13,9 @@
 // 3) math.js
 // 4) svgutils.js
 
-(function() {
+var svgedit = svgedit || {};
 
-if (!window.svgedit) {
-	window.svgedit = {};
-}
+(function() {
 
 if (!svgedit.select) {
 	svgedit.select = {};