[QAT] r318004: 3x leftovers, 1x depend (depend_package in x11/libxcb)

[Ports-QAT]

- fix pkg-plist and bump PORTREVISION because of that

while here:
- trim Makefile header
- remove leading indefinite article from COMMENT

Reported by:	pointyhat (miwi)
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  Build ID:          20130513082000-48120
  Job owner:         rm at FreeBSD.org
  Buildtime:         11 hours
  Enddate:           Mon, 13 May 2013 19:42:41 GMT

  Revision:          r318004
  Repository:        https://svnweb.freebsd.org/ports?view=revision&revision=318004

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    Port:            www/xist 3.25_1

      Buildgroup:     9.1-QAT/amd64
      Buildstatus:   LEFTOVERS
      Log: https://qat.redports.org//~rm@FreeBSD.org/20130513082000-48120-138176/py27-xist-3.25_1.log

      Buildgroup:     9.1-QAT/i386
      Buildstatus:   LEFTOVERS
      Log: https://qat.redports.org//~rm@FreeBSD.org/20130513082000-48120-138177/py27-xist-3.25_1.log

      Buildgroup:     8.3-QAT/amd64
      Buildstatus:   LEFTOVERS
      Log: https://qat.redports.org//~rm@FreeBSD.org/20130513082000-48120-138178/py27-xist-3.25_1.log

      Buildgroup:     8.3-QAT/i386
      Buildstatus:   DEPEND (DEPEND_PACKAGE IN X11/LIBXCB)
      Log: https://qat.redports.org//~rm@FreeBSD.org/20130513082000-48120-138179/libxcb-1.7.log


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