initial version of Quartus2.gitignore
added memory initialization files to be ignored
remove .sopcinfo file from the gitignore list
convert to unix line endings
added hex files to be ignored
added initial version of ModelSim.gitignore
Add .gitignore for Leiningen projects
Added Joomla 1.6
Ignore .sass-cache directory in Compass projects.
Changes to support CodeIgniter (Reactor) 2.0
Environment support eliminates the need to ignore database.php.  Instead, ignore the entire development dir.
Logs and cache are now in application folder instead of system.
Opencart gitignore file
Ignore file that contains your workspace preferences
Added ignore file for Espresso project files (Mac OS X only)
Added .sln.docstates to ignore list. As per http://goo.gl/NwdPT, they are a .suo supplement.
Added support for MonoDevelop .gitignore
Ignore emacs auto-save files (.# prefix)

The behavior is documented in [1].
The prefix doesn't seem to be documented, but it is hardoced as described in [2].

[1]: http://www.gnu.org/software/emacs/manual/html_node/emacs/Interlocking.html#Interlocking
[2]: http://tekman.livejournal.com/79598.html
Added newline in order to allow multiple adds of 
gitignore files.
Added newline at end of file.
ReSharper is a add-in which works in Visual Studio only. It's already in the VisualStudio gitignore file.
Ignore multiple backup directories & logfiles from vsual studio's project conversion.

It is possible to run the project converter multiple times, which would generate new backup-directories (Backup1-Backupn) and logfiles (UpgradeLog2.XML-UpgradeLogn.XML)