Fix the bug in ndn-certgen: encode certificate content
Add getIdentityManager in Keychain
Fixed a bug in createIdentityCertificate method in IdentityManager
Test cases change
Merge remote-tracking branch 'xingyu/refactoring' into xingyu
merge xingyu's commit
Merge branch 'xingyu' into refactoring
Fix some compiling error in mis-test2.cc
Fix another error in misc-test2.cc
Add another verifySignature method in PolicyManager
Add copy constructor of IdentityCertificate
Fix some minor compiling issue in simplekey-store.h/cc
Merge branch 'yingdi_branch' into refactoring

Conflicts:
	manager.py
	ndn.cxx/security/identity/identity-manager.cc
	security-tools/ndn-certgen.cc