[PATCH] Sort buffer names

Hi, Here is patch for sorted buffer names when ':ls" was given. I often use this command and when you have a bit of loaded files with various additional modes that opens own buffers, things becomes quite messy. This patch will apply sort on buffer names, so hidden buffers (those with " *xxx*") will be put first, then modes specific buffers (e.g. "*xxx*") and then goes files/directories. One nice feature would be numbering buffers, just like Vim does, so each buffer can be opened with ":b<n>". What do you guys think about it? Regards, Sanel