Ordenaciones de las grabaciones

Sort Recordings patch for VDR
-----------------------------

This patch changes the sort behaviour of the recordings menu. There
are now four sorting modes:

mode behaviour
  main directory sub directories
--------------------------------------------------------------------------
  0 alphabetically if special character(*) is found alphabetically,
  else by date
  1 by date if special character(*) is found alphabetically,
  else by date
  2 alphabetically alphabetically
  3 by date by date

(*) if a subdirectory name ends with one of ".-$ª·" (dot, hyphen, dollar sign, 
  ASCII-170 or ASCII-183) it is sorted alphabetically in sort mode 0 and 1

Sort mode 0 with none of the special characters at the end of any subdir 
corresponds to the default sorting mode of the original VDR.

The sorting mode can be switched through in the recording menu with the '0' key 
(0->1->2->3->0->...), a default for startup can be set in the setup->recordings menu.

Additionally the sort order (ascending/descending) can be toggled by the '9' key
(which is always set to ascending after a restart)

If you like the to see subdirectories before recordings you can select to put 
directories first in the setup->recordings menu. 

If you would like the sorting to ignore a leading '%' as they appear before cutted 
recordings this can be achived by setting the environment variable LC_COLLATE properly
(eg. LC_COLLATE=de_DE@euo in runvdr for germany).