golang: universally export CFLAGS and LDFLAGS to cgo builds
golang: universally export CFLAGS and LDFLAGS to cgo builds

To avoid gnu hash QA warnings, we universally export CFLAGS
and LDFLAGS as part of the CGO* variables.

  export CGO_CFLAGS="${CFLAGS} --sysroot=${STAGING_DIR_TARGET}"
  export CGO_LDFLAGS="${LDFLAGS} --sysroot=${STAGING_DIR_TARGET}"

Signed-of-fby: Bruce Ashfield <284cc737d174a260eec2a2a6324a304f84b1ae0f@windriver.com>

OverC/meta-overc,OverC/meta-overc,mufeng/meta-overc,mufeng/meta-overc,OverC/meta-overc,masselstine/meta-overc,jwessel/meta-overc,OverC/meta-overc,masselstine/meta-overc,jwessel/meta-overc,masselstine/meta-overc,mufeng/meta-overc,OverC/meta-overc,OverC/meta-overc,masselstine/meta-overc,jwessel/meta-overc