Improved ''set and save'' test for Configuration:  * remove entry sensitive to the locale.getpreferredencoding()  * test the lexical ordering of the configuration entries in the saved file
Improved ''set and save'' test for Configuration:
 * remove entry sensitive to the locale.getpreferredencoding()
 * test the lexical ordering of the configuration entries in the saved file

pkdevbox/trac,pkdevbox/trac,pkdevbox/trac,pkdevbox/trac