The socket support on Gnatdroid was broken, and it had to be fixed at
lang/gcc-aux.
Until now, the dejagnu testsuite did not work on remote targets. To fix
this, support files had to be installed at ${LOCALBASE}/share/dejagnu.
Dejagnu was not made a run dependency, conditional or otherwise. The
test targets for gnatdroid are really maintainer targets.
Running the gnat.dg testsuite confirms that everything works in the
cross-compiler except stack checking (there's no support in gcc for this
just yet).
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