SVN: Support for paths that are not branches or trunk
SVN: Support for paths that are not branches or trunk

Also fallback to displaying the repo's root name in the case where the
repo path is none of tags/branches/trunk

dtschan/liquidprompt,pkkolos/liquidprompt,elementalvoid/liquidprompt,timhyson/liquidprompt,tkuminecz/liquidprompt,kenrachynski/liquidprompt,BobHood/liquidprompt,dan-cleinmark/liquidprompt,laurentbardin/liquidprompt,alexprengere/liquidprompt,nojhan/liquidprompt,joshuarubin/dotfiles,joshuarubin/dotfiles,tocomo/liquidprompt,lyoshenka/liquidprompt,tstone2077/liquidprompt,mathieumd/liquidprompt,smadhueagle/liquidprompt,dpilone/liquidprompt,jaesivsm/liquidprompt,jonathanjsimon/liquidprompt,joshuarubin/dotfiles,illwieckz/liquidprompt,tsbarnes/liquidprompt,joshuarubin/dotfiles,milouse/liquidprompt,enrdstrm/liquidprompt,colinlieberman/liquidprompt