THRIFT-3711 Add D to cross language test

This closes #923
diff --git a/lib/d/test/Makefile.am b/lib/d/test/Makefile.am
index edb0444..c510471 100755
--- a/lib/d/test/Makefile.am
+++ b/lib/d/test/Makefile.am
@@ -74,7 +74,7 @@
 
 if WITH_D_SSL_TESTS
 d_test_flags += $(DMD_OPENSSL_FLAGS) ../$(D_SSL_LIB_NAME)
-targets = trusted-ca-certificate.pem server-certificate.pem $(targets_)
+targets = $(targets_)
 ran_tests = $(ran_tests_)
 else
 targets = $(filter-out $(openssl_dependent_targets), $(targets_))
@@ -125,3 +125,5 @@
 	trusted-ca-certificate.pem server-certificate.pem
 
 TESTS = $(ran_tests)
+
+precross: $(targets)