top: make '#define GRAPHS_ALIGN' an immutable solution

My original graph modes implementation made no attempt
to align the Cpu & Mem/Swap graphs. I thought, rather,
that such alignment could be best achieved by the user
using top's 'E' memory scaling command toggle. In that
way Mem/Swap prefixes could be reduced by 3 positions,
bringing the beginning '[' into line with the %Cpu(s).

If that proved to be too cumbersome a #define could be
enabled making the Mem/Swap prefix static while adding
a few padding bytes to the %Cpu line(s) for alignment.
It was those waisted bytes that were the most concern.

What I had not counted on was the fact that the memory
lines themselves might become misaligned & that became
likely with more physical memory present. That too can
be cured with the 'E' command but as scaling is raised
we soon reach a meaningless total such as '0.003' even
though the displayed % remains valid (and unchanging).

So this commit implements unconditionally what used to
be conditional. But, instead of waisting padding bytes
we'll put that space to good use with a new 'total %'.

Reference(s):
http://www.freelists.org/post/procps/latest-top-enhancements,1
commit 1d171ec741

Signed-off-by: Jim Warner <james.warner@comcast.net>

top/top.h

@@ -36,7 +36,6 @@
 //#define CASEUP_SUFIX            /* show time/mem/cnts suffix in upper case */
 //#define CPU_ZEROTICS            /* tolerate few tics when cpu off vs. idle */
 //#define EQUCOLHDRYES            /* yes, do equalize column header lengths  */
-//#define GRAPHS_ALIGN            /* force cpu & memory graphs to be aligned */
 //#define INSP_JUSTNOT            /* don't smooth unprintable right margins  */
 //#define INSP_OFFDEMO            /* disable demo screens, issue msg instead */
 //#define INSP_SAVEBUF            /* preserve 'Insp_buf' contents in a file  */