xev: update to 1.2.3.

This release features some small bug fixes and janitorial maintenance.

Alan Coopersmith (7):
      Add -version to usage output
      Collapse usage message into a single string
      Adopt X.Org standard code style
      Replace sprintf calls with snprintf
      Update README for gitlab migration
      Update configure.ac bug URL for gitlab migration
      xev 1.2.3

Eitan Adler (1):
      xev: fix 'mode' in default case (version 2)

Emil Velikov (1):
      autogen.sh: use quoted string variables

Mihail Konev (1):
      autogen: add default patch prefix

Peter Hutterer (1):
      autogen.sh: use exec instead of waiting for configure to finish

(wiz)