On 64-bit, splitting a 64-bit binary results in a 64-bit DWARF .debug file. To properly test 32-on-64, a 32-bit binary needs to be split (it will create a 32-bit DWARF .debug file).
Move installation of test-sysroot to pkglibdir. * Makefile.am (pkglib_PROGRAMS): Add funit-addresses-stripped. Remove nobase_pkgdata_DATA.