New releases of ddd, pydb, remake and bashdb

There are new releases of the remake, bashdb, pydb debuggers. They now have more of additional gdb commands. But most notable of the last two debuggers, bahdb, and pydb, is that they support some sort of command completion (if GNU readline is available).

As always bugs have been fixed and documentation improved (and is online as well).

In conjunction with the new debuggers the features have been encorporated into a new test version of ddd. The previous test version (3.3.12-test4) of ddd introducted a bug which prevented correct interaction between ddd and gdb. So if you have version 3.3.12-test4 installed you should definitely upgrade to 3.3.12-test5.