HOB: 'str' object has no attribute 'close'

For builddetailspage.py:
  The "f" was a stream in the past, it is a string now, so it doesn't
  need f.close(), and change its name to "branch".

  And we don't need the "2>&1" since bb.process.run() can handle it, it
  will raise exception when error occurs, we should handle the exception
  ourselves if we want to ignore the error.

For hig.py:
  Use bb.process.Popen() since it doesn't need the return value. If we
  use bb.process.run(), the parent process will wait for the child process
  to terminate to get the result.

[YOCTO #2511]

(Bitbake rev: ab10f3da1976581c371c43cdb88f405cf6fbcd95)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/ui/crumbs/hig.py

@@ -831,7 +831,7 @@ class DeployImageDialog (CrumbsDialog):
                 cmdline = bb.ui.crumbs.utils.which_terminal()
                 if cmdline:
                     cmdline += "\"sudo dd if=" + self.image_path + " of=" + combo_item + "\""
-                    bb.process.run(shlex.split(cmdline))
+                    bb.process.Popen(shlex.split(cmdline))
 
     def update_progress_bar(self, title, fraction, status=None):
         self.progress_bar.update(fraction)