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Description
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Xorg is linked with -zlazyload flags to not load dynamic libraries until needed.
When it's already initialized the devices and then fails to load one of these
libraries, it is killed without a chance to close down the devices cleanly, so
just leaves the screen looking like it is hung, and the user doesn't have a
chance to get back to the text console to see what the problem is.
The runtime loader provides a dlinfo() option to let us set the signal used to
kill the process when it has a fatal error - we should use that to set the
signal to one we catch with our cleanup routines.
*** Test Case ***
mv /usr/lib/libhal.so.1.0.0 /usr/lib/libhal.so.1.0.0.bak
mv /usr/lib/64/libhal.so.1.0.0 /usr/lib/64/libhal.so.1.0.0.bak
Restart Xorg - instead of just hanging, it should log an error message and
stack trace to Xorg.0.log, and clear the screen.
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