- Bumped NETGAMEVERSION, which should have been done when I changed the order uservars were sent
  during netgame initialization.

SVN r4338 (trunk)
- Bump up to 2.7.0.

SVN r4339 (trunk)
- Revert r4244. It seems to be working well enough like this, since there have been no complaints.

SVN r4341 (trunk)
Convert svn:ignore to .gitignore.
- Change updaterevision to use git instead of svnversion
- Use gitinfo.h instead of svnrevision.h for versioning.
- Use functions in gitinfo.cpp to retrieve the strings from gitinfo.h so
  that changes to gitinfo.h only require recompiling one file instead of
  several.
- baseversion.h was not supposed to make its way into zdoom.vcproj, since it was never used.
- Make a copy of the polyobject mirror number instead of relying on being able to read it from the initial linedef.
Set master banch up as 2.8pre and maint branch for 2.7.x
- fixed typo in USDF spec.
- comment fixes taken from GZDoom.
- division by zero check in R_SetVisibility from GZDoom.
- d_dehackedactions no longer exists.
- updated .gitignore to ignore all compile generated files.
- added _mental_'s patch for loading .deh/.bex files if no Dehacked lump can be found.
- added Edward-san's patch for allowing 'clang' compiler to use the same 'gcc' cmake settings
- added _mental_*s compatibility fix for Ultimate Simplicity, map07
- added Ryan Cordell's A_CheckRange submission.
- added DavidPH's patch for compiling with FModEx 4.44.01.
- added Edward-san's spycancel submission.
- DavidPH's patch for Linux compilation.
- fixed typo in USDF spec.
- comment fixes taken from GZDoom.
- division by zero check in R_SetVisibility from GZDoom.