Locker image + BaseRewriteURL

[MJS@mjs.us]

This seems to be the issue:

• Note the upper case of the ARewriteURL value '/DFWPE'.
  
• The locker url translates ARewriteURL to lower case - http://127.0.0.1/dfwpe/$/gfx/loading_svg.svg
  

If I change the locker url to http://127.0.0.1/DFWPE/$/gfx/loading_svg.svg then it correctly serves the file.  I checked some of the other internal file url's and the original ARewriteURL case is preserved.