package curl: install prefixed curl-config
package xmlrpc-c: use prefixed curl-config and build test program
Package ilmbase: Enable shared build.
Package openexr: Enable shared build.
Package pango: Enable shared build.

FIXME: Maybe enable --with-dynamic-modules in shared build? What's the
difference?
Package libbluray: Ugly fix for shared build.
Package ffmpeg: Fix generation of --arch param.

GNU Make's patsubst does strange things (aka. nothing at all) when there
are dots in the text it should replace...
Enable shared builds for atk, gdk-pixbuf and gtk2.