Follow upstream file changes and fix build

- Add asn1_lib.c
- Consolidation of ASN.1 code
  Add asn1_item.c asn1_old.c
  Remove a_d2i_fp.c a_digest.c a_dup.c a_i2d_fp.c a_sign.c a_verify.c
- Merge evp_asn1.c into a_type.c
- Merge asn_pack.c into asn1_item.c
- Rename tls13_key_share.c to tls_key_share.c
- Add bio/bio_local.h dh/dh_local.h ocsp/ocsp_local.h
- Add comp/comp_local.h
- Add define LIBRESSL_CRYPTO_INTERNAL to regress build

tests/CMakeLists.txt

@@ -1,7 +1,10 @@
+add_definitions(-DLIBRESSL_CRYPTO_INTERNAL)
+
 include_directories(
 	.
-	../crypto/modes
 	../crypto/asn1
+	../crypto/bio
+	../crypto/modes
 	../crypto/x509
 	../ssl
 	../apps/openssl

tests/Makefile.am

@@ -1,7 +1,10 @@
 include $(top_srcdir)/Makefile.am.common
 
-AM_CPPFLAGS += -I $(top_srcdir)/crypto/modes
+AM_CPPFLAGS += -DLIBRESSL_CRYPTO_INTERNAL
+
 AM_CPPFLAGS += -I $(top_srcdir)/crypto/asn1
+AM_CPPFLAGS += -I $(top_srcdir)/crypto/bio
+AM_CPPFLAGS += -I $(top_srcdir)/crypto/modes
 AM_CPPFLAGS += -I $(top_srcdir)/crypto/x509
 AM_CPPFLAGS += -I $(top_srcdir)/ssl
 AM_CPPFLAGS += -I $(top_srcdir)/apps/openssl