Merged r[280]:[358] from source:/sandbox/follower/b-singlefile/ (Enable building of Single File Library version of OpenLayers library).

git-svn-id: http://svn.openlayers.org/trunk/openlayers@359 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers.js

@@ -29,8 +29,23 @@ OpenLayers._getScriptLocation = function () {
     return scriptLocation;
 }
 
-try{new OpenLayers.Map();}
-catch(e){
+/*
+  `_OPENLAYERS_SFL_` is a flag indicating this file is being included
+  in a Single File Library build of the OpenLayers Library.
+
+  When we are *not* part of a SFL build we dynamically include the
+  OpenLayers library code.
+
+  When we *are* part of a SFL build we do not dynamically include the 
+  OpenLayers library code as it will be appended at the end of this file.
+*/
+if (typeof(_OPENLAYERS_SFL_) == "undefined") {
+    /*
+      The original code appeared to use a try/catch block
+      to avoid polluting the global namespace,
+      we now use a anonymous function to achieve the same result.
+     */
+    (function() {
     var jsfiles=new Array(
         "Prototype.js", 
         "Rico/Corner.js",
@@ -78,4 +93,5 @@ catch(e){
         allScriptTags += currentScriptTag;
     }
     document.write(allScriptTags);
-};
+    })();
+}

lib/_sfl_header.js

@@ -0,0 +1,2 @@
+_OPENLAYERS_SFL_=true
+