The legacy ABI probes live in legacy-src/, with their archived headers
under legacy-src/include/OpenEXR/. The multipart probe lives in src/ and
uses the installed development headers. The abi-compat runner builds
and runs both sets of probes.

The legacy headers are copied unchanged from Debian trixie libopenexr-dev
3.1.13-2 and retain their upstream license notices. They supply the old
public object declarations while other unchanged headers come from the
installed development package. The tests exercise old object allocation,
legacy exported vector helpers, multipart ownership and development metadata.

ImfRgbaFile.h SHA256 be27449d65b38acc6cba40c2edee60c082358cbb53c2876f526d07fdf6b71920
ImfIDManifest.h SHA256 9298d29a995491e9837bf2c588dcdd47f08000d73c39fbe9d903372a6a8fd2ed
