* Change the meaning of EXTRAVERBOSE; previously, it was a y/n option
to make things more verbose. Add extra levels of verbosity (0, 1, 2 so
far) and a new vvecho() function for callers to use.
git-svn-id: http://abcde.googlecode.com/svn/trunk@319 a0fa61bc-5347-0410-a1a9-7f54aa4e1825