swift234

[Printer] update the implementation of ProtocolConformance::printName.

Our serializer does not serialize the inherited field of GenericTypeParamDecl.
PrintAST::printInherited handles the case where the 'inherited' list is
absent and grab the information from the protocols.

SILPrinter prints the protocol conformance used in sil_witness_table by calling
printName, which calls GenericParamList::print instead of
PrintAST::printGenericParams. In order to print the correct inherited list, this
commit changes the implementation of ProtocolConformance::printName to use
PrintAST::printGenericParams.

rdar://18400903


Swift SVN r22371