configure: Prepend pixman and ftd flags to overrule system-provided ones

Other packages may provide includes for pixman as well if the host has a
devel package installed. So add ours to the front to unsure that the
right version is used.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Merge remote-tracking branch 'remotes/kraxel/tags/pull-console-20141015-1' into staging

configure: Prepend pixman and ftd flags to overrule system-provided ones

# gpg: Signature made Wed 15 Oct 2014 11:21:13 BST using RSA key ID D3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"

* remotes/kraxel/tags/pull-console-20141015-1:
  configure: Prepend pixman and ftd flags to overrule system-provided ones

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>