Add OpenSSL includes as needed

The isc/crypto.h now directly includes the OpenSSL headers (evp.h) and
any application that includes that header also needs to have
OPENSSL_CFLAGS in the Makefile.am.  Adjust the required automake files
as needed.

bin/delv/Makefile.am

@@ -5,7 +5,8 @@ AM_CPPFLAGS +=				\
 	$(LIBISC_CFLAGS)		\
 	$(LIBDNS_CFLAGS)		\
 	$(LIBNS_CFLAGS)			\
-	$(LIBISCCFG_CFLAGS)
+	$(LIBISCCFG_CFLAGS)		\
+	$(OPENSSL_CFLAGS)
 
 AM_CPPFLAGS +=				\
 	-DSYSCONFDIR=\"${sysconfdir}\"

bin/dig/Makefile.am

@@ -5,7 +5,8 @@ AM_CPPFLAGS +=			\
 	$(LIBDNS_CFLAGS)	\
 	$(LIBISCCFG_CFLAGS)	\
 	$(LIBIDN2_CFLAGS)	\
-	$(LIBUV_CFLAGS)
+	$(LIBUV_CFLAGS)		\
+	$(OPENSSL_CFLAGS)
 
 LDADD +=			\
 	libdighost.la		\

lib/isccc/Makefile.am

@@ -27,7 +27,8 @@ libisccc_la_CPPFLAGS =		\
 	$(AM_CPPFLAGS)		\
 	$(LIBISC_CFLAGS)	\
 	$(LIBDNS_CFLAGS)	\
-	$(LIBISCCC_CFLAGS)
+	$(LIBISCCC_CFLAGS)	\
+	$(OPENSSL_CFLAGS)
 
 libisccc_la_LIBADD =	\
 	$(LIBISC_LIBS)