Sync

- Implemented sync over TLS.
- Obsoleted the Socket code, replacing it with TLSClient, TLSServer.
- Added task server details to the 'diagnostics' command output.
- 'rc.debug.tls' controls the GnuTLS log level.
- Removed redundant cmake diagnostics.

CMakeLists.txt

@@ -56,7 +56,6 @@ set (PACKAGE_STRING "${PACKAGE} ${VERSION}")
 message ("-- Looking for GnuTLS")
 find_package (GnuTLS)
 if (GNUTLS_FOUND)
-  message ("-- Found GnuTLS: ${GNUTLS_LIBRARIES}")
   set (HAVE_LIBGNUTLS true)
   set (TASK_INCLUDE_DIRS ${TASK_INCLUDE_DIRS} ${GNUTLS_INCLUDE_DIR})
   set (TASK_LIBRARIES    ${TASK_LIBRARIES}    ${GNUTLS_LIBRARIES})
@@ -79,7 +78,6 @@ set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/Modules")
 message ("-- Looking for GNU Readline")
 find_package (Readline)
 if (READLINE_FOUND)
-  message ("-- Found GNU Readline: ${READLINE_LIBRARIES}")
   set (HAVE_READLINE true)
   set (TASK_INCLUDE_DIRS ${TASK_INCLUDE_DIRS} ${READLINE_INCLUDE_DIR})
   set (TASK_LIBRARIES    ${TASK_LIBRARIES}    ${READLINE_LIBRARIES})