Imports of trillian_log_signer command

PathSynopsis
contextPackage context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes.
flagPackage flag implements command-line flag parsing.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
github.com/golang/glogPackage glog implements logging analogous to the Google-internal C++ INFO/ERROR/V setup.
github.com/google/trillianPackage trillian contains the generated protobuf code for the Trillian API.
github.com/google/trillian/cmdPackage cmd contains common code for the various binaries in this repository.
github.com/google/trillian/cmd/internal/serverutilPackage serverutil holds code for running Trillian servers.
github.com/google/trillian/crypto/keys/der/proto
github.com/google/trillian/crypto/keys/pem/proto
github.com/google/trillian/crypto/keys/pkcs11/proto
github.com/google/trillian/extensionPackage extension provides an extension mechanism for Trillian code to access fork-specific functionality.
github.com/google/trillian/logPackage log holds the code that is specific to Trillian logs core operation, particularly the code for sequencing.
github.com/google/trillian/merkle/rfc6962
github.com/google/trillian/monitoringPackage monitoring provides monitoring functionality.
github.com/google/trillian/monitoring/opencensusPackage opencensus enables tracing and metrics collection using OpenCensus.
github.com/google/trillian/monitoring/prometheusPackage prometheus provides a Prometheus-based implementation of the MetricFactory abstraction.
github.com/google/trillian/quotaPackage quota defines Trillian's Quota Management service.
github.com/google/trillian/quota/etcdPackage etcd provides the configuration and initialization of the etcd quota manager.
github.com/google/trillian/quota/mysqlqmPackage mysqlqm defines a MySQL-based quota.Manager implementation.
github.com/google/trillian/storagePackage storage provides general interfaces to Trillian storage layers.
github.com/google/trillian/storage/cloudspannerPackage cloudspanner contains the Cloud Spanner storage implementation.
github.com/google/trillian/storage/mysqlPackage mysql provides a MySQL-based storage layer implementation.
github.com/google/trillian/utilPackage util holds utility functions.
github.com/google/trillian/util/clockPackage clock contains time utilities, and types that allow mocking system time in tests.
github.com/google/trillian/util/electionPackage election provides a generic interface for election of a leader.
github.com/google/trillian/util/election2Package election2 provides master election tools, and interfaces for plugging in a custom underlying mechanism.
github.com/google/trillian/util/election2/etcdPackage etcd provides an implementation of master election based on etcd.
github.com/google/trillian/util/etcd
google.golang.org/grpcPackage grpc implements an RPC system called gRPC.
net/http/pprofPackage pprof serves via its HTTP server runtime profiling data in the format expected by the pprof visualization tool.
osPackage os provides a platform-independent interface to operating system functionality.
runtime/pprofPackage pprof writes runtime profiling data in the format expected by the pprof visualization tool.
timePackage time provides functionality for measuring and displaying time.