huge top extension

Hi Craig,

For a long time I wished there was an easy way to support the expansion 
of fields.  In newlib, top currently displays 76 fields with a maximum 
of of 86 under the current design (ok, 94 if remaining printable 
characters are used).

As a means of exploring stuff, locally I maintain a branch with many 
extra top fields which the public version never sees.  As such I bump up 
against these internal limitations.

I finally came up with a solution that provides top with essentially an 
unlimited capacity for new fields.  And patch #0004 shows how easy it is 
to expand beyond my current provision of 100.

Under this new design I almost gave up on supporting older rcfiles.  But 
I eventually overcame all obstacles. Prior configuration files are 
seamlessly supported (even back to a 20+ year old 3.2.8 version).

In addition to the newlib patches, I've also included some master branch 
catch-up patches.  I only implemented ones that don't impact libproc.

Thanks in advance for the pushes.

Regards,

Jim

p.s. any estimate on when newlib might be born?