[[ ExtensionUtils ]] Move some extension handling code into utils library

Author: livecodeali

Toolset/home.livecodescript

@@ -1193,6 +1193,7 @@ command revInternal__InitialiseLibraries
    put return & "revIDEDocumentationLibrary" after tLoadList
    put return & "revMetadataLibrary" after tLoadList   
    put return & "revSBLibrary" after tLoadList
+   put return & "extension-utils" after tLoadList
    put return & "revideextensionlibrary" after tLoadList
    put return & "revIDELibrary" after tLoadList
    put return & "revidemessagehandlerlibrary" after tLoadList

Toolset/libraries/revidedeveloperextensionlibrary.livecodescript

@@ -965,7 +965,7 @@ private function __revIDEDeveloperExtensionAddSpecifiedFilesToPackage \
       repeat for each line tSupport in pSupportFiles
          put pFolder & slash & tSupport into tSupport
          revZipAddItemWithFile pArchive, item -1 of tSupport, tSupport
-      
+
          if the result begins with "ziperr" then
             put "couldn't add support file" && tSupport into tError
             exit repeat