[tracker] build: Avoid warnings about including subdir objects

[Martyn James Russell <mr src gnome org>]

commit e46bfc1c4391b40ba59b4ea965245a78537fe7d2
Author: Martyn Russell <martyn lanedo com>
Date:   Wed Jul 9 16:16:52 2014 +0100

    build: Avoid warnings about including subdir objects
    
    Use AUTOMAKE_OPTIONS=subdir-objects.
    
    This is only needed for shared private source files for testing and also for
    tracker-preferences to know about the miner-fs' config. It's use is limited.

 src/libtracker-miner/Makefile-shared-sources.decl |    1 +
 src/tracker-preferences/Makefile.am               |    2 ++
 2 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/libtracker-miner/Makefile-shared-sources.decl 
b/src/libtracker-miner/Makefile-shared-sources.decl
index 702885e..bdfc8c6 100644
--- a/src/libtracker-miner/Makefile-shared-sources.decl
+++ b/src/libtracker-miner/Makefile-shared-sources.decl
@@ -1,3 +1,4 @@
+AUTOMAKE_OPTIONS = subdir-objects
 
 # Includes sources that will be shared with the
 # testers in test/libtracker-miner
diff --git a/src/tracker-preferences/Makefile.am b/src/tracker-preferences/Makefile.am
index 03963b0..d1f03a1 100644
--- a/src/tracker-preferences/Makefile.am
+++ b/src/tracker-preferences/Makefile.am
@@ -1,3 +1,5 @@
+AUTOMAKE_OPTIONS = subdir-objects
+
 @INTLTOOL_DESKTOP_RULE@
 
 bin_PROGRAMS = tracker-preferences