[Gtkradiant] [Bug 764] New: functionality patch from Dalroi @ Raven

[gtkradiant@zerowing.idsoftware.com]

http://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=764

           Summary: functionality patch from Dalroi @ Raven
           Product: GtkRadiant
           Version: 1.2
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: editor
        AssignedTo: ttimo@idsoftware.com
        ReportedBy: ttimo@idsoftware.com


Incoming patch from Dalroi @ Raven against 1.2 codebase
Main features
- CTRL-F3 entity find/replace (F3 = find next)
- "target2", 3,4, line-drawing is now in
- misc_model_breakable now show up as proper models
- grouping and ghosting is now in

Posting full details in attachement.
Have extracted the changes into a path. Builds fine on Linux. Need to be checked
on win32.

It's likely that we want to review the functionality and do a few cleanups.
We'll probably put this on a branch till we're happy with it.