[QAT] 348851: 2x leftovers, 4x success

[Ports-QAT]

www/seamonkey: Unbreak DragonFly

The first fix is a NO-OP for FreeBSD.  The clang/optimized flags work-
around is OSVERSION-specific, so let's limit it to FreeBSD only.

The real breakage was caused by the XPI_FILE substitution.  The "x86"
part of DragonFly's "x86_64" was getting transformed incorrectly to
"i386_64".  This could be prevented by changing the replacement pattern
to "x86$", but "x86" is not a standard ARCH value, so this substitution
isn't made on FreeBSD anyway.  The solution is just remove it as the
only effect it has is negative.

Tested on: Redports, all four i386 builders pass
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  Build ID:          20140323120200-24609
  Job owner:         marino at FreeBSD.org
  Buildtime:         32 minutes
  Enddate:           Sun, 23 Mar 2014 12:34:07 GMT

  Revision:          348851
  Repository:        https://svnweb.freebsd.org/ports?view=revision&revision=348851

---------------------------------------------------------------------

    Port:            www/seamonkey 

      Buildgroup:     10.0-QAT/amd64
      Buildstatus:   LEFTOVERS
      Log: https://qat.redports.org//~marino@FreeBSD.org/20140323120200-24609-305980/seamonkey-2.25.log

      Buildgroup:     10.0-QAT/i386
      Buildstatus:   LEFTOVERS
      Log: https://qat.redports.org//~marino@FreeBSD.org/20140323120200-24609-305981/seamonkey-2.25.log

      Buildgroup:     8.4-QAT/amd64
      Buildstatus:   SUCCESS
      Log: https://qat.redports.org//~marino@FreeBSD.org/20140323120200-24609-305982/seamonkey-2.25.log

      Buildgroup:     8.4-QAT/i386
      Buildstatus:   SUCCESS
      Log: https://qat.redports.org//~marino@FreeBSD.org/20140323120200-24609-305983/seamonkey-2.25.log

      Buildgroup:     9.2-QAT/amd64
      Buildstatus:   SUCCESS
      Log: https://qat.redports.org//~marino@FreeBSD.org/20140323120200-24609-305984/seamonkey-2.25.log

      Buildgroup:     9.2-QAT/i386
      Buildstatus:   SUCCESS
      Log: https://qat.redports.org//~marino@FreeBSD.org/20140323120200-24609-305985/seamonkey-2.25.log


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Buildarchive URL: <https://qat.redports.org/buildarchive/20140323120200-24609>
redports <https://qat.redports.org/>