[gnumeric] configure: back off on gtk+ to 3.8.7

[Morten Welinder <mortenw src gnome org>]

commit f1de485fe793090cd3b2335e765e5668a1f89b96
Author: Morten Welinder <terra gnome org>
Date:   Mon May 5 21:16:49 2014 -0400

    configure: back off on gtk+ to 3.8.7

 README       |    2 +-
 configure.ac |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/README b/README
index c064aa4..3984ea5 100644
--- a/README
+++ b/README
@@ -15,7 +15,7 @@ Requirements
 
 You need:                              Debian package name
        glib            >= 2.38.0       libglib2.0-dev
-       gtk+            >= 3.8.8        libgtk3.0-dev
+       gtk+            >= 3.8.7        libgtk3.0-dev
        libgsf          >= 1.14.24      libgsf-1-dev
        libgoffice      >= 0.10.9       libgoffice-0-8-dev
        gnome-xml       >= 2.4.12       libxml2-dev
diff --git a/configure.ac b/configure.ac
index a452e29..e547569 100644
--- a/configure.ac
+++ b/configure.ac
@@ -165,7 +165,7 @@ gnumeric_reqs="$libspreadsheet_reqs
        pangocairo              >= 1.24.0
 "
 libspreadsheet_gtk_reqs="
-       gtk+-3.0                >= 3.8.8
+       gtk+-3.0                >= 3.8.7
 "
 
 gnumeric_gtk_reqs="$libspreadsheet_gtk_reqs"