gitk: Use right colour for remote refs in the "Tags and heads" dialog

Makes it easier to see which refs are local and which refs are remote.
Adds consistency with the remote background colour in the graph display.

Signed-off-by: Paul Wise <pabs3@bonedaddy.net>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>

Author: pabs3

gitk

@@ -3404,6 +3404,8 @@ set rectmask {
 }
 image create bitmap reficon-H -background black -foreground "#00ff00" \
     -data $rectdata -maskdata $rectmask
+image create bitmap reficon-R -background black -foreground "#ffddaa" \
+    -data $rectdata -maskdata $rectmask
 image create bitmap reficon-o -background black -foreground "#ddddff" \
     -data $rectdata -maskdata $rectmask
 
@@ -10057,6 +10059,7 @@ proc sel_reflist {w x y} {
     set n [lindex $ref 0]
     switch -- [lindex $ref 1] {
 	"H" {selbyid $headids($n)}
+	"R" {selbyid $headids($n)}
 	"T" {selbyid $tagids($n)}
 	"o" {selbyid $otherrefids($n)}
     }
@@ -10086,7 +10089,11 @@ proc refill_reflist {} {
     foreach n [array names headids] {
 	if {[string match $reflistfilter $n]} {
 	    if {[commitinview $headids($n) $curview]} {
-		lappend refs [list $n H]
+		if {[string match "remotes/*" $n]} {
+		    lappend refs [list $n R]
+		} else {
+		    lappend refs [list $n H]
+		}
 	    } else {
 		interestedin $headids($n) {run refill_reflist}
 	    }