[trac542] Removed --as-needed link flag from Makefile

This does not work whe linking using Clang on OS X.  As it is not
necessary, it has been removed.

tests/tools/badpacket/tests/Makefile.am

@@ -21,7 +21,7 @@ run_unittests_SOURCES += $(top_builddir)/tests/tools/badpacket/command_options.c
 run_unittests_SOURCES += $(top_builddir)/tests/tools/badpacket/option_info.cc
 
 run_unittests_CPPFLAGS = $(AM_CPPFLAGS) $(GTEST_INCLUDES)
-run_unittests_LDFLAGS = $(AM_LDFLAGS) $(GTEST_LDFLAGS) -Wl,--as-needed
+run_unittests_LDFLAGS = $(AM_LDFLAGS) $(GTEST_LDFLAGS)
 
 run_unittests_LDADD  = $(GTEST_LDADD)
 run_unittests_LDFLAGS += $(top_builddir)/src/lib/exceptions/libexceptions.la