Merge branch 'ap/git-svn-propset-doc' into maint

"git svn propset" subcommand that was added in 2.3 days is
documented now.

* ap/git-svn-propset-doc:
  git-svn: document the 'git svn propset' command

Documentation/git-svn.txt

@@ -459,6 +459,20 @@ Any other arguments are passed directly to 'git log'
 	Gets the Subversion property given as the first argument, for a
 	file.  A specific revision can be specified with -r/--revision.
 
+'propset'::
+	Sets the Subversion property given as the first argument, to the
+	value given as the second argument for the file given as the
+	third argument.
++
+Example:
++
+------------------------------------------------------------------------
+git svn propset svn:keywords "FreeBSD=%H" devel/py-tipper/Makefile
+------------------------------------------------------------------------
++
+This will set the property 'svn:keywords' to 'FreeBSD=%H' for the file
+'devel/py-tipper/Makefile'.
+
 'show-externals'::
 	Shows the Subversion externals.  Use -r/--revision to specify a
 	specific revision.