try_gdb_0_3_0 (jasmin on Mon Apr 02 08:38:06 CEST 2012):
   + After cleaning, empty directories are removed now.
   + download-* does no longer depend on the download directory, so the files
     are not downloaded any longer, altough they are present. This happended,
     because each write to the download directory changed the directory
     modification date, which is checked by make for the rules execution.
   + patch rule added and all required clean dummy rules, too.
   + Added avrpatches, avrheaders and binutils.
   + Added help text.

try_gdb_0_2_0 (jasmin on Sun Apr 01 02:40:52 CEST 2012):
   + Added tools revision generation out of svn.
   + Internal structure completely changed to make macros, which will expand
     the rules.
   + The different targets will now execute only, if the dependend thing
     is not allready made.
   + Added new rules to force the execution (xxxx-yyyy-f).
   NOTE: Currently only autoconf and automake reworked.

try_gdb_0_1_0 (jasmin on Sun Mar 25 20:41:08 CEST 2012):
   + gdb added (not working).
   + When executing make with a target, it is not rebuild any longer, if
     nothing has been changed.
   + Added *-force tags to have the old behaviour still available (not
     finished).
   + Added clean-* rules for each sub target.
   + Added realclean-* ruels, whch will remove the downloaded file, too.
   NOTE: Currently NOT TESTED!!!

rel_0_1_0 (jasmin on Sun Mar 25 19:21:33 CEST 2012):
   + Initial release based on vendor version 990c274.