pfstools 1.9.0 released

This release brings two major changes: The way the Radiance RGBE files
are handled has been altered to be compatible with most of the
software; and this is the first release with CMake build
system. Although automake files are still supported, that support will
be dropped in future releases. Other changes include two new tools:
pfsretime and pfscolortransform, performance improvements and bug
fixes.