- Ran kib's rtld-filter tests (but not the other tests from the tarball)
under mipso32 (mipsn64 binaries failed to link)
- Ran various other programs (linker was installed as the default linker
in /) in both mipsn64 and mipso32 qemu instances.
- Ran a gdb7 binary linked against libc++ (but not sure any filters were
used as it was built purely with libc++ from scratch so shouldn't
reference any libstdc++-specific ABI).