Update to 1.0.6:

This minor maintenance release mostly contains code cleanups and
sacrifices to appease the compilers and reduce the wrath of their
warnings.

Alan Coopersmith (7):
      Assume signal handlers return void, as C89 requires
      Add _X_NORETURN attributes suggested by gcc
      Fix some sign/size conversion warnings from clang
      Mark unused arguments in callback functions to quiet clang warnings
      Use void * instead of char * for generic pointer arg to DoFunc functions
      Constify some more string pointers to fix gcc warnings
      iceauth 1.0.6

(wiz)