Vidy 6/4/99
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added "mdm dbg" and "alloc table" debugger commands.
This is a powerful procedure for memory leak detection without consuming
much memeory to log the history.
How to use.
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* Boot the target and give some timer so that PPP comes up.
* type "mem dbg" on the console. From here on all allocs (both
	malloc and calloc) are recorded with the caller.
* type "alloc table" to see the blocs allocated at any time
* typing "mem dbg" again will stop recording.

Jo 07/04/99 : Introduced check to see if configuration_through_SMC_in_progress()
	      then suppress printf's. Only if Bus error occurs then printf is enabled.
	      Changed files printf.c, vprintf.c
