encoding: Move oid support from security/certificate to encoding.
diff --git a/Makefile.in b/Makefile.in
index 45cdd95..ddbd037 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -180,10 +180,9 @@
 	ndn-cpp/publisher-public-key-digest.lo \
 	ndn-cpp/sha256-with-rsa-signature.lo \
 	ndn-cpp/encoding/binary-xml-wire-format.lo \
-	ndn-cpp/encoding/element-listener.lo \
+	ndn-cpp/encoding/element-listener.lo ndn-cpp/encoding/oid.lo \
 	ndn-cpp/encoding/wire-format.lo ndn-cpp/security/key-chain.lo \
 	ndn-cpp/security/security-exception.lo \
-	ndn-cpp/security/certificate/oid.lo \
 	ndn-cpp/security/certificate/public-key.lo \
 	ndn-cpp/security/identity/basic-identity-storage.lo \
 	ndn-cpp/security/identity/identity-manager.lo \
@@ -576,15 +575,15 @@
   include/ndn-cpp/node.hpp \
   include/ndn-cpp/publisher-public-key-digest.hpp \
   include/ndn-cpp/sha256-with-rsa-signature.hpp \
-  include/ndn-cpp/encoding/element-listener.hpp \
   include/ndn-cpp/encoding/binary-xml-wire-format.hpp \
+  include/ndn-cpp/encoding/element-listener.hpp \
+  include/ndn-cpp/encoding/oid.hpp \
   include/ndn-cpp/encoding/wire-format.hpp \
   include/ndn-cpp/security/security-common.hpp \
   include/ndn-cpp/security/key-chain.hpp \
   include/ndn-cpp/security/security-exception.hpp \
   include/ndn-cpp/security/certificate/certificate.hpp \
   include/ndn-cpp/security/certificate/identity-certificate.hpp \
-  include/ndn-cpp/security/certificate/oid.hpp \
   include/ndn-cpp/security/certificate/public-key.hpp \
   include/ndn-cpp/security/encryption/encryption-manager.hpp \
   include/ndn-cpp/security/identity/basic-identity-storage.hpp \
@@ -650,10 +649,10 @@
   ndn-cpp/encoding/binary-xml-structure-decoder.hpp \
   ndn-cpp/encoding/binary-xml-wire-format.cpp \
   ndn-cpp/encoding/element-listener.cpp \
+  ndn-cpp/encoding/oid.cpp \
   ndn-cpp/encoding/wire-format.cpp \
   ndn-cpp/security/key-chain.cpp \
   ndn-cpp/security/security-exception.cpp \
-  ndn-cpp/security/certificate/oid.cpp \
   ndn-cpp/security/certificate/public-key.cpp \
   ndn-cpp/security/identity/basic-identity-storage.cpp \
   ndn-cpp/security/identity/identity-manager.cpp \
@@ -868,6 +867,8 @@
 ndn-cpp/encoding/element-listener.lo:  \
 	ndn-cpp/encoding/$(am__dirstamp) \
 	ndn-cpp/encoding/$(DEPDIR)/$(am__dirstamp)
+ndn-cpp/encoding/oid.lo: ndn-cpp/encoding/$(am__dirstamp) \
+	ndn-cpp/encoding/$(DEPDIR)/$(am__dirstamp)
 ndn-cpp/encoding/wire-format.lo: ndn-cpp/encoding/$(am__dirstamp) \
 	ndn-cpp/encoding/$(DEPDIR)/$(am__dirstamp)
 ndn-cpp/security/$(am__dirstamp):
@@ -887,9 +888,6 @@
 ndn-cpp/security/certificate/$(DEPDIR)/$(am__dirstamp):
 	@$(MKDIR_P) ndn-cpp/security/certificate/$(DEPDIR)
 	@: > ndn-cpp/security/certificate/$(DEPDIR)/$(am__dirstamp)
-ndn-cpp/security/certificate/oid.lo:  \
-	ndn-cpp/security/certificate/$(am__dirstamp) \
-	ndn-cpp/security/certificate/$(DEPDIR)/$(am__dirstamp)
 ndn-cpp/security/certificate/public-key.lo:  \
 	ndn-cpp/security/certificate/$(am__dirstamp) \
 	ndn-cpp/security/certificate/$(DEPDIR)/$(am__dirstamp)
@@ -1063,10 +1061,10 @@
 @AMDEP_TRUE@@am__include@ @am__quote@ndn-cpp/c/util/$(DEPDIR)/ndn_realloc.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@ndn-cpp/encoding/$(DEPDIR)/binary-xml-wire-format.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@ndn-cpp/encoding/$(DEPDIR)/element-listener.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@ndn-cpp/encoding/$(DEPDIR)/oid.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@ndn-cpp/encoding/$(DEPDIR)/wire-format.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@ndn-cpp/security/$(DEPDIR)/key-chain.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@ndn-cpp/security/$(DEPDIR)/security-exception.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@ndn-cpp/security/certificate/$(DEPDIR)/oid.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@ndn-cpp/security/certificate/$(DEPDIR)/public-key.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@ndn-cpp/security/identity/$(DEPDIR)/basic-identity-storage.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@ndn-cpp/security/identity/$(DEPDIR)/identity-manager.Plo@am__quote@