Add memory usage to the report

[olexandr-konovalov]

SCSCP package provides MemoryUsageByGAPinKbytes:

BindGlobal( "MemoryUsageByGAPinKbytes", function()
local s, mem;
s := IO_Popen( "ps", [ "-p", String( IO_getpid() ), "-o", "vsz" ], "r");
IO_ReadLine(s);
mem := IO_ReadLine(s);
IO_Close(s);
RemoveCharacters( mem, " \n" );
return Int(mem);
end);

Reporting this will be a useful addition to the output.