Rename openexr package to cpp_openexr (conflicted with openexr package on Ubuntu)

openexr/Makefile

 	mkdir -p out/opt/cppse/build/openexr
 	cp -prv openexr/build/openexr_out/* out/opt/cppse/build/openexr/
 	cp -prv openexr/build2/openexr_out/lib/* out/opt/cppse/build/openexr/lib/
-	rm -rf openexr_*_amd64.deb
-	docker run -v "$$(pwd):/src/" rayburgemeestre/fpm-ubuntu:20.04 fpm -v 1.1 -s dir -t deb -n openexr --license MPL2 --maintainer "Ray Burgemeestre <ray@cppse.nl>" --description "openexr - build dependency" --url "https://github.com/mattgodbolt/openexr" --deb-generate-changes -C /src/out
+	rm -rf cppse_openexr_*_amd64.deb
+	docker run -v "$$(pwd):/src/" rayburgemeestre/fpm-ubuntu:20.04 fpm -v 1.1 -s dir -t deb -n cppse_openexr --license MPL2 --maintainer "Ray Burgemeestre <ray@cppse.nl>" --description "openexr - build dependency" --url "https://github.com/AcademySoftwareFoundation/openexr" --deb-generate-changes -C /src/out
 
 clean:
 	rm -rf openexr