I've added $memwithbuffers to complement $mem, $memeasyfree, etc. This
variable indicates the used system memory, regardless of buffers/caches. If
the "no_buffers" option is set to "no", it will be the same as $mem. The
reason I find this change useful is that I like to display both the total
used system memory and the memory being used by applications.
I've also included a memwithbuffersbar, which is the same as membar except
that it uses $memwithbuffers as the size instead of $mem.
Signed-off-by: Pavel Labath <pavelo@centrum.sk>