"Issue" in termiosinitialize.c

[Smith, Gene]

This may or may not arise to the level of a bug. The problem was that I 
had forgotten to zero out bss section at startup. The function

cpukit/libcsupport/src/termiosinitialze.c

defines a global variable that, in the same file, is assumed to be zero 
at startup. Since uninitialized data was not zero'd the termios init 
failed for me.

If the variable rtems_termios_ttyMutex had been explicitly set to zero 
when defined it would not have mattered if bss was zero'd.

Bug or not a bug?

Diff attached.

-gene



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