[gtksourceviewmm] Change ABI from gtksourceviewmm-3.0 to gtksourceviewmm-4.0.

[Murray Cumming <murrayc src gnome org>]

commit e7ac04e4e6cc313a6d4d0f340681050fa466739a
Author: Murray Cumming <murrayc murrayc com>
Date:   Mon Nov 14 11:43:35 2016 +0100

    Change ABI from gtksourceviewmm-3.0 to gtksourceviewmm-4.0.
    
    This installs in parallel with gtksourceviewmm-3.0.

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 0e0a48d..8a91591 100644
--- a/configure.ac
+++ b/configure.ac
@@ -14,7 +14,7 @@ AM_MAINTAINER_MODE
 AC_ARG_VAR([ACLOCAL_FLAGS], [aclocal flags, e.g. -I <macro dir>])
 
 MM_PREREQ([0.9.8])
-MM_INIT_MODULE([gtksourceviewmm-3.0])
+MM_INIT_MODULE([gtksourceviewmm-4.0])
 
 # Copy the mm-common .pl scripts into docs/,
 # and use them from there,