[glibmm] Change the ABI to glibmm-2.54

[Murray Cumming <murrayc src gnome org>]

commit 9f89221b024b028286bea35f7a4d9b873bfb3266
Author: Murray Cumming <murrayc murrayc com>
Date:   Fri Aug 25 11:19:07 2017 +0200

    Change the ABI to glibmm-2.54
    
    So we can use the 2.53/54 version numbers for more stable releases.
    We don't need to release a stable ABI-parallel glibmm until
    we need to release gtkmm 4.0, and that won't happen until GTK+ 4.0.0
    happens, and we don't know when that might be.
    
    We did this once before:
    https://git.gnome.org/browse/glibmm/commit/?id=dee483b29bdaaabc587f3f8b6bff05663e7dccdc

 configure.ac                  |    6 +++---
 docs/Makefile_web.am_fragment |    6 +++---
 glib/glibmm.h                 |    4 ++--
 tools/Makefile.am             |    8 ++++----
 4 files changed, 12 insertions(+), 12 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index efe6a09..1e1598c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -15,7 +15,7 @@
 ## You should have received a copy of the GNU Lesser General Public License
 ## along with this library.  If not, see <http://www.gnu.org/licenses/>.
 
-AC_INIT([glibmm], [2.53.2],
+AC_INIT([glibmm], [2.55.1],
         [http://bugzilla.gnome.org/enter_bug.cgi?product=glibmm],
         [glibmm], [http://www.gtkmm.org/])
 AC_PREREQ([2.59])
@@ -31,8 +31,8 @@ AM_MAINTAINER_MODE
 AC_ARG_VAR([ACLOCAL_FLAGS], [aclocal flags, e.g. -I <macro dir>])
 
 MM_PREREQ([0.9.10])
-MM_INIT_MODULE([glibmm-2.54])
-MM_INIT_MODULE([giomm-2.54])
+MM_INIT_MODULE([glibmm-2.56])
+MM_INIT_MODULE([giomm-2.56])
 
 # Copy the mm-common .pl scripts into docs/,
 # and use them from there,
diff --git a/docs/Makefile_web.am_fragment b/docs/Makefile_web.am_fragment
index 209e87c..dd59ab9 100644
--- a/docs/Makefile_web.am_fragment
+++ b/docs/Makefile_web.am_fragment
@@ -1,8 +1,8 @@
 web_host = gtkmm.org
-web_path_gtkmm = /home/murrayc/gtkmm.org/docs/glibmm-2.54/
-#web_path_gtkmm = /home/groups/g/gt/gtkmm/htdocs/docs/glibmm-2.54/
+web_path_gtkmm = /home/murrayc/gtkmm.org/docs/glibmm-2.56/
+#web_path_gtkmm = /home/groups/g/gt/gtkmm/htdocs/docs/glibmm-2.56/
 web_path_docs = $(web_path_gtkmm)docs/
 rsync_args = -vz --rsh ssh
 
-gtkmm_docdir = $(datadir)/doc/glibmm-2.54/docs
+gtkmm_docdir = $(datadir)/doc/glibmm-2.56/docs
 
diff --git a/glib/glibmm.h b/glib/glibmm.h
index a9e90e0..101b80e 100644
--- a/glib/glibmm.h
+++ b/glib/glibmm.h
@@ -65,12 +65,12 @@
  *
  * If your  source file is @c program.cc, you can compile it with:
  * @code
- * g++ program.cc -o program  `pkg-config --cflags --libs glibmm-2.54 giomm-2.54`
+ * g++ program.cc -o program  `pkg-config --cflags --libs glibmm-2.56 giomm-2.56`
  * @endcode
  *
  * Alternatively, if using autoconf, use the following in @c configure.ac:
  * @code
- * PKG_CHECK_MODULES([GLIBMM], [glibmm-2.54 giomm-2.54])
+ * PKG_CHECK_MODULES([GLIBMM], [glibmm-2.56 giomm-2.56])
  * @endcode
  * Then use the generated @c GLIBMM_CFLAGS and @c GLIBMM_LIBS variables in the
  * project Makefile.am files. For example:
diff --git a/tools/Makefile.am b/tools/Makefile.am
index 77b2a32..b583e1d 100644
--- a/tools/Makefile.am
+++ b/tools/Makefile.am
@@ -34,16 +34,16 @@ dist_noinst_DATA    = README TODO
 dist_noinst_SCRIPTS = enum.pl
 
 noinst_PROGRAMS = extra_defs_gen/generate_defs_glib extra_defs_gen/generate_defs_gio
-lib_LTLIBRARIES = extra_defs_gen/libglibmm_generate_extra_defs-2.54.la
+lib_LTLIBRARIES = extra_defs_gen/libglibmm_generate_extra_defs-2.56.la
 
 extradefs_includedir      = $(includedir)/$(GLIBMM_MODULE_NAME)/glibmm_generate_extra_defs
 extradefs_include_HEADERS = extra_defs_gen/generate_extra_defs.h
 
 extradefs_ldflags = -no-undefined -version-info $(LIBGLIBMM_SO_VERSION)
 
-extra_defs_gen_libglibmm_generate_extra_defs_2_54_la_SOURCES = extra_defs_gen/generate_extra_defs.cc
-extra_defs_gen_libglibmm_generate_extra_defs_2_54_la_LDFLAGS = $(extradefs_ldflags)
-extra_defs_gen_libglibmm_generate_extra_defs_2_54_la_LIBADD  = $(GLIBMM_LIBS)
+extra_defs_gen_libglibmm_generate_extra_defs_2_56_la_SOURCES = extra_defs_gen/generate_extra_defs.cc
+extra_defs_gen_libglibmm_generate_extra_defs_2_56_la_LDFLAGS = $(extradefs_ldflags)
+extra_defs_gen_libglibmm_generate_extra_defs_2_56_la_LIBADD  = $(GLIBMM_LIBS)
 
 extra_defs_gen_generate_defs_glib_SOURCES = extra_defs_gen/generate_defs_glib.cc
 extra_defs_gen_generate_defs_glib_LDADD   = $(GLIBMM_LIBS) $(lib_LTLIBRARIES)