address win32 build issues

- Replace external -DOPENSSL/-DPKCS11CRYPTO with properly AC_DEFINEd
  HAVE_OPENSSL/HAVE_PKCS11
- Don't enforce the crypto provider from platform.h, just from dst_api.c
  and configure scripts

lib/dns/tests/keytable_test.c

@@ -18,8 +18,6 @@
 #include <unistd.h>
 #include <stdio.h>
 
-#if defined(OPENSSL) || defined(PKCS11CRYPTO)
-
 #include <isc/base64.h>
 #include <isc/buffer.h>
 #include <isc/util.h>
@@ -698,24 +696,10 @@ ATF_TC_BODY(nta, tc) {
 	dns_test_end();
 }
 
-#else
-#include <isc/util.h>
-
-ATF_TC(untested);
-ATF_TC_HEAD(untested, tc) {
-	atf_tc_set_md_var(tc, "descr", "skipping keytable test");
-}
-ATF_TC_BODY(untested, tc) {
-	UNUSED(tc);
-	atf_tc_skip("DNSSEC not available");
-}
-#endif
-
 /*
  * Main
  */
 ATF_TP_ADD_TCS(tp) {
-#if defined(OPENSSL) || defined(PKCS11CRYPTO)
 	ATF_TP_ADD_TC(tp, add);
 	ATF_TP_ADD_TC(tp, delete);
 	ATF_TP_ADD_TC(tp, deletekeynode);
@@ -723,9 +707,6 @@ ATF_TP_ADD_TCS(tp) {
 	ATF_TP_ADD_TC(tp, issecuredomain);
 	ATF_TP_ADD_TC(tp, dump);
 	ATF_TP_ADD_TC(tp, nta);
-#else
-	ATF_TP_ADD_TC(tp, untested);
-#endif
 
 	return (atf_no_error());
 }