what does %E display as?

[Christopher Faylor]

2002-09-29  Christopher Faylor  <cgf@redhat.com>

        * thread.cc: Use "%E" in *_printf throughout rather than calling
        GetLastError.  GNUify comments.

%E was added quite some time ago to eliminate the need to call
GetLastError.  Also, the strace_printf calls all automatically add a \n
to the output.

cgf