Release 4.2.1

Signed-off-by: Allan McRae <allan@archlinux.org>

configure.ac

@@ -42,12 +42,12 @@ AC_PREREQ(2.62)
 #     pacman_version_micro += 1
 
 m4_define([lib_current], [9])
-m4_define([lib_revision], [0])
+m4_define([lib_revision], [1])
 m4_define([lib_age], [0])
 
 m4_define([pacman_version_major], [4])
 m4_define([pacman_version_minor], [2])
-m4_define([pacman_version_micro], [0])
+m4_define([pacman_version_micro], [1])
 m4_define([pacman_version],
           [pacman_version_major.pacman_version_minor.pacman_version_micro])