Log Message:
Upgrade misc/screen to version 4.3.1 and address stack overflog bug 45713.

Ref: https://savannah.gnu.org/bugs/?45713

Changes since version 4.2.1
---------------------------

Version 4.3.1 (28/06/2015):
  * Fix resize bug

Version 4.3.0 (13/06/2015):
  * Introduce Xx string escape showing the executed command of a window
  * Implement dead/zombie window polling, allowing for auto reconnecting
  * Allow setting hardstatus on first line

  New Commands:
  * 'sort' command sorting windows by title
  * 'bumpleft', 'bumpright' - manually move windows on window list
  * 'collapse' removing numbering 'gaps' between windows, by renumbering
  * 'windows' command now accepts arguments for use with querying