irb/irbrc: Want Brice to be loud.
vim/vimrc: More secure cryptmethod; persistent undo; central location for temp files.
bash/bash_aliases: No longer use -K with Ruby 2.0.
bash/profile: Source .bashrc.
bash/{bashrc,profile}: Return true.
bash/bash_scm_info (__git_name): Use `describe`.
bash/bash_scm_info (__scm_info): Skip if .no_scm_info exists.