Merge commit 'git-gui/master'

* commit 'git-gui/master': (36 commits)
  git-gui: Change prior tree SHA-1 verification to use git_read
  git-gui: Include a space in Cygwin shortcut command lines
  git-gui: Use sh.exe in Cygwin shortcuts
  git-gui: Paper bag fix for Cygwin shortcut creation
  git-gui: Improve the Windows and Mac OS X shortcut creators
  git-gui: Teach console widget to use git_read
  git-gui: Perform our own magic shbang detection on Windows
  git-gui: Treat `git version` as `git --version`
  git-gui: Assume unfound commands are known by git wrapper
  git-gui: Correct gitk installation location
  git-gui: Always use absolute path to all git executables
  git-gui: Show a progress meter for checking out files
  git-gui: Change the main window progress bar to use status_bar
  git-gui: Extract blame viewer status bar into mega-widget
  git-gui: Allow double-click in checkout dialog to start checkout
  git-gui: Default selection to first matching ref
  git-gui: Unabbreviate commit SHA-1s prior to display
  git-gui: Refactor branch switch to support detached head
  git-gui: Refactor our ui_status_value update technique
  git-gui: Better handling of detached HEAD
  ...

git-gui/lib/remote_branch_delete.tcl

@@ -98,10 +98,10 @@ constructor dialog {} {
 	button $w.heads.footer.rescan \
 		-text {Rescan} \
 		-command [cb _rescan]
-	pack $w.heads.footer.status -side left -fill x -expand 1
+	pack $w.heads.footer.status -side left -fill x
 	pack $w.heads.footer.rescan -side right
 
-	pack $w.heads.footer -side bottom -fill x -expand 1
+	pack $w.heads.footer -side bottom -fill x
 	pack $w.heads.sby -side right -fill y
 	pack $w.heads.l -side left -fill both -expand 1
 	pack $w.heads -fill both -expand 1 -pady 5 -padx 5
@@ -296,7 +296,7 @@ method _load {cache uri} {
 		set full_list [list]
 		set head_cache($cache) [list]
 		set full_cache($cache) [list]
-		set active_ls [open "| [list git ls-remote $uri]" r]
+		set active_ls [git_read ls-remote $uri]
 		fconfigure $active_ls \
 			-blocking 0 \
 			-translation lf \