Minor update and fixes to D highlight support.
Merge pull request #4 from likema/master

Highlight .c++, .hh, .ipp, .moc and .inl
Merge pull request #3 from ibuclaw/dsyntax

Minor update and fixes to D highlight support.
Some README updates.

Convert to Markdown for nice display on Github.  Link to the current home page
and remove stale link to documentation on SourceForge.
Remove obsolete AM_CONFIG_HEADER macro.
Fixed a bug that cgdb will crash when hit 'n' with no source loaded.

(Fixed typo of 'curr' and tested 'sview' for NULL. --mmueller)
Fixed a bug that sometimes use quit command from gdb will not quit cgdb.
Change docs license as requested in #6.
Allow configure options to be passed to autorelease.sh.

If you are on a system (like mine) where you need to pass options like
--with-readline=... to configure, then autorelease.sh would be a problem.
Now it takes the configure options as parameters to the script and passes them
on whenever configure is invoked, e.g.:

  ./autorelease.sh --with-readline=/usr/local/Cellar/readline/6.2.4
Update version to cgdb-0.6.7.
Update README with new download location.
Add tiwb to AUTHORS file.