Drop the -details option, it was broken. If you want to know about a

Drop the -details option, it was broken. If you want to know about a
particular directory, just pass that directory to the script. Also, clean
up the HTML output, put list of skipped dirs at the end, and make a few
other minor improvements.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29620 91177308-0d34-0410-b5e6-96231b3b80d8