pkgconf is broken?

[Sergio de Almeida Lenzi]

Hello,

new pkgconf (0.8.12) does different results
from previos version (0.8.9)

if I have instaled mjpegtools-2.0.0

command: pkgconf --exists --print-errors "mjpegtools > 1.6.0 mjpegtools
< 1.8.0"

pkgconf version 0.8.9 returns 1 (correct answer)
pkgconf version 0.8.12 returs 0, and make the package with errors...