MFC r258101:
  Since the doc/ toolchain conversion to docbook 5.0, JADETEX
  is no longer a valid option, so remove 'WITHOUT_JADETEX=yes'
  from PBUILD_FLAGS.

  While here, also remove 'WITHOUT_X11=yes', since it will
  cause a dependency conflict by requiring both print/ghostscript9
  and print/ghostscript9-nox11.

  Switch to OPTIONSNG format (WITHOUT_* -> OPTIONS_UNSET='FOO'),
  and unset the FOP option, which requires Java (although it is
  disabled by default).  Also unset the 'IGOR' option, since
  textproc/igor is a validation tool, not necessarily a dependency
  of the doc/ build itself.

  While here, reduce the line length of PBUILD_FLAGS.

Approved by:	re (kib)

Sponsored by:	The FreeBSD Foundation