Run cscope and ctags in parallel

git-svn-id: http://svn.shatow.net/shells@185 ea227b21-592c-dd11-b15d-00012992a58a
Fix ctags lock not being removed when ran from top-level

git-rev-parse --git-dir is stupidly sometimes relative, sometimes absolute


git-svn-id: http://svn.shatow.net/shells@186 ea227b21-592c-dd11-b15d-00012992a58a
Add a script to continuously generate tags

git-svn-id: http://svn.shatow.net/shells@187 ea227b21-592c-dd11-b15d-00012992a58a