[tracker] configure: Update configure for sqlite3 support 3.7.15

[Carlos Garnacho <carlosg src gnome org>]

commit 183dbaa03cd361f69f9fb61593446faac84d9c1b
Author: sahaltim9 <fabrice louveau_ext softathome com>
Date:   Tue Jan 20 15:01:37 2015 +0100

    configure: Update configure for sqlite3 support 3.7.15
    
    sqlite3_errstr was added in that version.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=743245

 configure.ac |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index e19c824..7cf5f6c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -243,7 +243,8 @@ LIBMEDIAART_REQUIRED=1.9.0
 # 3.6.17 for shared cache mode with virtual tables
 # 3.7.0 for WAL
 # 3.7.9 for FTS4 content= support
-SQLITE_REQUIRED=3.7.9
+# 3.7.15 for sqlite3_errstr() support
+SQLITE_REQUIRED=3.7.15
 
 # Needed to generate .gir files,
 # see http://live.gnome.org/GnomeGoals/AddGObjectIntrospectionSupport