[glom/gtkmm4v4] Use glibmm-2.54 instead of glibmm-2.52.

[Murray Cumming <murrayc src gnome org>]

commit a56f67b237f6c55fab3271d8bfd4f605c924efc3
Author: Murray Cumming <murrayc murrayc com>
Date:   Thu Mar 23 11:39:11 2017 +0100

    Use glibmm-2.54 instead of glibmm-2.52.
    
    We changed the ABI name.

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index b09db9e..7cb506d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -163,7 +163,7 @@ AS_IF([test "x$glom_enable_postgresql" = xyes],
 
 
 # Libraries used by libglom:
-REQUIRED_LIBGLOM_LIBS='giomm-2.52 >= 2.47.4 libxml++-4.0 >= 3.0.0 libxslt >= 1.1.10 pygobject-3.0 >= 2.29.0 
libgdamm-6.0 >= 4.99.10 libgda-6.0 >= 5.2.1 libgda-postgres-6.0 libgda-postgres-6.0 libgda-mysql-6.0 
libarchive >= 3.0'
+REQUIRED_LIBGLOM_LIBS='giomm-2.54 >= 2.47.4 libxml++-4.0 >= 3.0.0 libxslt >= 1.1.10 pygobject-3.0 >= 2.29.0 
libgdamm-6.0 >= 4.99.10 libgda-6.0 >= 5.2.1 libgda-postgres-6.0 libgda-postgres-6.0 libgda-mysql-6.0 
libarchive >= 3.0'
 
 AS_IF([test "x$glom_host_win32" != xyes],
       [REQUIRED_LIBGLOM_LIBS="$REQUIRED_LIBGLOM_LIBS libepc-2.0 >= 0.4.0"])