Move the non-crypto parts of onion.c out of src/core/crypto

The parts for handling cell formats should be in src/core/or.

The parts for handling onionskin queues should be in src/core/or.

Only the crypto wrapper belongs in src/core/crypto.

src/core/include.am

@@ -11,7 +11,7 @@ LIBTOR_APP_A_SOURCES = 				\
 	src/app/config/confparse.c		\
 	src/app/config/statefile.c		\
 	src/core/crypto/hs_ntor.c		\
-	src/core/crypto/onion.c			\
+	src/core/crypto/onion_crypto.c		\
 	src/core/crypto/onion_fast.c		\
 	src/core/crypto/onion_ntor.c		\
 	src/core/crypto/onion_tap.c		\
@@ -34,6 +34,7 @@ LIBTOR_APP_A_SOURCES = 				\
 	src/core/or/connection_edge.c		\
 	src/core/or/connection_or.c		\
 	src/core/or/dos.c			\
+	src/core/or/onion.c			\
 	src/core/or/policies.c			\
 	src/core/or/protover.c			\
 	src/core/or/reasons.c			\
@@ -95,6 +96,7 @@ LIBTOR_APP_A_SOURCES = 				\
 	src/feature/nodelist/torcert.c		\
 	src/feature/relay/dns.c			\
 	src/feature/relay/ext_orport.c		\
+	src/feature/relay/onion_queue.c		\
 	src/feature/relay/router.c		\
 	src/feature/relay/routerkeys.c		\
 	src/feature/rend/rendcache.c		\
@@ -164,7 +166,7 @@ noinst_HEADERS +=					\
 	src/app/config/statefile.h			\
 	src/app/main/ntmain.h				\
 	src/core/crypto/hs_ntor.h			\
-	src/core/crypto/onion.h				\
+	src/core/crypto/onion_crypto.h	        	\
 	src/core/crypto/onion_fast.h			\
 	src/core/crypto/onion_ntor.h			\
 	src/core/crypto/onion_tap.h			\
@@ -202,6 +204,7 @@ noinst_HEADERS +=					\
 	src/core/or/entry_port_cfg_st.h			\
 	src/core/or/extend_info_st.h			\
 	src/core/or/listener_connection_st.h		\
+	src/core/or/onion.h				\
 	src/core/or/or.h				\
 	src/core/or/or_circuit_st.h			\
 	src/core/or/or_connection_st.h			\
@@ -307,6 +310,7 @@ noinst_HEADERS +=					\
 	src/feature/relay/dns.h				\
 	src/feature/relay/dns_structs.h			\
 	src/feature/relay/ext_orport.h			\
+	src/feature/relay/onion_queue.h			\
 	src/feature/relay/router.h			\
 	src/feature/relay/routerkeys.h			\
 	src/feature/rend/rend_authorized_client_st.h	\