pkg-config: don't create programs with the arch-host prefix
pkg-config: don't create programs with the arch-host prefix

Fixes install step in osx:
"cd /Users/gstreamermacosx/cerbero/build-tools/bin && ln pkg-config
x86_64-apple-darwinx-pkg-config
ln: x86_64-apple-darwinx-pkg-config: File exists"

BigBrother-International/gst-cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,BigBrother-International/gst-cerbero,BigBrother-International/gst-cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,BigBrother-International/gst-cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,freedesktop-unofficial-mirror/gstreamer-sdk__cerbero,BigBrother-International/gst-cerbero