Log Message:
Update to 1.0.6:

This minor maintenance release provides the usual recent collection of
build configuration improvements and janitorial cleanups.  It does not
provide enough gamma radiation to mutate the user into a green-skinned
giant who likes to smash things.

Alan Coopersmith (9):
      Add noreturn attribute to Syntax function
      Fix size/sign conversion warnings in isabbreviation()
      Fix const char warnings in calls to isabbreviation()
      Combine usage message fprintfs into a single call
      Print which option was in error along with usage message
      Add -version option to print program version
      configure: Drop AM_MAINTAINER_MODE
      autogen.sh: Honor NOCONFIGURE=1
      xgamma 1.0.6