Add a "show malloc" command to DDB, which prints out the current stats for available kernel malloc types.  Quite useful for post-mortem debugging of memory leaks without a dump device configured on a panicked box.
Add a "show malloc" command to DDB, which prints out the current stats for
available kernel malloc types.  Quite useful for post-mortem debugging of
memory leaks without a dump device configured on a panicked box.

MFC after:	2 weeks

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase