[tracker] Enable unit tests by default so they are included in make distcheck

[Martyn James Russell <mr src gnome org>]

commit 1d5943752f71c824dfa6c77d2183704cae827e72
Author: Martyn Russell <martyn imendio com>
Date:   Tue Jul 28 09:40:33 2009 +0100

    Enable unit tests by default so they are included in make distcheck

 configure.ac |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 7fea9a4..83d5d43 100644
--- a/configure.ac
+++ b/configure.ac
@@ -329,8 +329,8 @@ AC_SUBST(GCOV_LIBS)
 
 AC_ARG_ENABLE(unit_tests,
 	      AS_HELP_STRING([--enable-unit-tests],
-			     [enable unit tests [[default=no]]]), ,
-	      [enable_unit_tests=no])
+			     [enable unit tests [[default=yes]]]), ,
+	      [enable_unit_tests=yes])
 
 if test "x$enable_unit_tests" != "xno" ; then
    have_unit_tests=yes