Use lf translation rather than binary when reading commit data.

The effect of this is that it allows Tcl to do the locale-specific
conversion of the input data to its internal unicode representation.
That means that commit messages in Russian or other languages should
be displayed correctly now (according to the locale that is in effect.)

gitk

@@ -48,7 +48,7 @@ proc getcommits {rargs} {
 	exit 1
     }
     set leftover {}
-    fconfigure $commfd -blocking 0 -translation binary
+    fconfigure $commfd -blocking 0 -translation lf
     fileevent $commfd readable "getcommitlines $commfd"
     $canv delete all
     $canv create text 3 3 -anchor nw -text "Reading commits..." \