Use $<TARGET_OBJECTS:..> in tests/../CMakeLists for uniformity
Use $<TARGET_OBJECTS:..> in tests/../CMakeLists for uniformity

For uniformity, instead of FORESTDB_CORE_SRC and
FORESTDB_UTILS_SRC use $<TARGET_OBJECTS:FDB_TOOLS_CORE>
and $<TARGET_OBJECTS:FDB_TOOLS_UTILS>.

Change-Id: I7cb4826f0a0e028e79fb040f6beac8f05922be51
Reviewed-on: http://review.couchbase.org/61589
Tested-by: buildbot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Chiyoung Seo <fcffc23db27b19ee4ebba46695ee6b50e09216a2@couchbase.com>

hisundar/forestdb,wurikiji/forestdb,wurikiji/forestdb,couchbase/forestdb,hisundar/forestdb,couchbase/forestdb