bump product version to 7.6.1.0.0+

Change-Id: I05f61210c8f36428dc77696385f0383adc4b1723
diff --git a/configure.ac b/configure.ac
index d519ee7..59eecb9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -9,7 +9,7 @@ dnl in order to create a configure script.
# several non-alphanumeric characters, those are split off and used only for the
# ABOUTBOXPRODUCTVERSIONSUFFIX in openoffice.lst. Why that is necessary, no idea.

AC_INIT([LibreOffice],[7.6.0.1.0+],[],[],[http://documentfoundation.org/])
AC_INIT([LibreOffice],[7.6.1.0.0+],[],[],[http://documentfoundation.org/])

dnl libnumbertext needs autoconf 2.68, but that can pick up autoconf268 just fine if it is installed
dnl whereas aclocal (as run by autogen.sh) insists on using autoconf and fails hard