[pygobject] Bump automake version to 1.12.6

[Christoph Reiter <creiter src gnome org>]

commit 72ab17963e81fb63f7238123c359be8d83a529f4
Author: Christoph Reiter <creiter src gnome org>
Date:   Sun Oct 25 11:39:22 2015 +0100

    Bump automake version to 1.12.6
    
    Required to a get a new enough py-compile which supports
    the __pycache__ directories for newer Python 3 versions.
    See https://debbugs.gnu.org/cgi/bugreport.cgi?bug=8847
    
    Also remove m4/py-compile which doesn't seem to get used in
    either 1.11 or 1.15 here.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=757086

 configure.ac  |    4 +-
 m4/py-compile |  161 ---------------------------------------------------------
 2 files changed, 3 insertions(+), 162 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index b977ca8..34dbf09 100644
--- a/configure.ac
+++ b/configure.ac
@@ -44,7 +44,9 @@ AC_SUBST(PYGOBJECT_MICRO_VERSION, pygobject_micro_version)
 
 AC_CONFIG_HEADERS(config.h)
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES(yes)])
-AM_INIT_AUTOMAKE([1.11.1 foreign no-dist-gzip dist-xz])
+# 1.12.6 to get a py-compile supporting newer Python 3 versions.
+# See https://debbugs.gnu.org/cgi/bugreport.cgi?bug=8847
+AM_INIT_AUTOMAKE([1.12.6 foreign no-dist-gzip dist-xz])
 
 dnl put the ACLOCAL flags in the makefile
 ACLOCAL="$ACLOCAL $ACLOCAL_FLAGS"