add missing BRs on openjp2

Signed-off-by: Igor Gnatenko <ignatenkobrain@fedoraproject.org>

gdcm.spec

@@ -29,7 +29,7 @@ BuildRequires:	libtheora-devel
 BuildRequires:	libuuid-devel
 BuildRequires:	mesa-libOSMesa-devel
 BuildRequires:	compat-openssl10-devel
-BuildRequires:	openjpeg-devel
+BuildRequires:  pkgconfig(libopenjp2)
 #BuildRequires:	/usr/bin/pdflatex
 BuildRequires:	poppler-devel
 BuildRequires:	python2-devel