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

bin/named/Makefile.in

@@ -48,7 +48,7 @@ CINCLUDES =	-I${srcdir}/include -I${srcdir}/unix/include -I. \
 		${ISC_INCLUDES} ${DLZDRIVER_INCLUDES} \
 		${DBDRIVER_INCLUDES} @DST_OPENSSL_INC@
 
-CDEFINES =      @CONTRIB_DLZ@ @USE_PKCS11@ @PKCS11_ENGINE@ @CRYPTO@
+CDEFINES =      @CONTRIB_DLZ@ @USE_PKCS11@ @PKCS11_ENGINE@
 
 CWARNINGS =
 

bin/named/main.c

@@ -44,7 +44,7 @@
 #include <dns/view.h>
 
 #include <dst/result.h>
-#ifdef PKCS11CRYPTO
+#if HAVE_PKCS11
 #include <pk11/result.h>
 #endif
 
@@ -75,7 +75,7 @@
 #include <named/smf_globals.h>
 #endif
 
-#ifdef OPENSSL
+#if HAVE_OPENSSL
 #include <openssl/opensslv.h>
 #include <openssl/crypto.h>
 #endif
@@ -693,7 +693,7 @@ parse_command_line(int argc, char *argv[]) {
 #ifdef __SUNPRO_C
 			printf("compiled by Solaris Studio %x\n", __SUNPRO_C);
 #endif
-#ifdef OPENSSL
+#if HAVE_OPENSSL
 			printf("compiled with OpenSSL version: %s\n",
 			       OPENSSL_VERSION_TEXT);
 #if !defined(LIBRESSL_VERSION_NUMBER) && \
@@ -1279,7 +1279,7 @@ main(int argc, char *argv[]) {
 	dns_result_register();
 	dst_result_register();
 	isccc_result_register();
-#ifdef PKCS11CRYPTO
+#if HAVE_PKCS11
 	pk11_result_register();
 #endif
 

bin/named/unix/Makefile.in

@@ -17,7 +17,7 @@ CINCLUDES =	-I${srcdir}/include -I${srcdir}/../include \
 		${ISCCFG_INCLUDES} ${ISCCC_INCLUDES} \
 		${DNS_INCLUDES} ${ISC_INCLUDES} @DST_OPENSSL_INC@
 
-CDEFINES =	@CRYPTO@
+CDEFINES =
 CWARNINGS =
 
 OBJS =		os.@O@ dlz_dlopen_driver.@O@