[QAT] 355289: 4x leftovers

[Ports-QAT]

- Fix parallel builds (-jX) and remove MAKE_JOBS_UNSAFE
- Utilize PLIST_FILES and PORTDOCS instead of pkg-plist
- Reword port description a bit; fix Makefile header
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  Build ID:          20140526085000-23963
  Job owner:         danfe at FreeBSD.org
  Buildtime:         113 minutes
  Enddate:           Mon, 26 May 2014 10:43:27 GMT

  Revision:          355289
  Repository:        https://svnweb.freebsd.org/ports?view=revision&revision=355289

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    Port:            benchmarks/nbench 2.2.3

      Buildgroup:     8.4-QAT/amd64
      Buildstatus:   LEFTOVERS
      Log: https://qat.redports.org//~danfe@FreeBSD.org/20140526085000-23963-338482/nbench-2.2.3.log

      Buildgroup:     8.4-QAT/i386
      Buildstatus:   LEFTOVERS
      Log: https://qat.redports.org//~danfe@FreeBSD.org/20140526085000-23963-338483/nbench-2.2.3.log

      Buildgroup:     9.2-QAT/amd64
      Buildstatus:   LEFTOVERS
      Log: https://qat.redports.org//~danfe@FreeBSD.org/20140526085000-23963-338484/nbench-2.2.3.log

      Buildgroup:     9.2-QAT/i386
      Buildstatus:   LEFTOVERS
      Log: https://qat.redports.org//~danfe@FreeBSD.org/20140526085000-23963-338485/nbench-2.2.3.log


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