P-Core and E-Core Processors

Hi Craig,

Attached are three patches that implement an important extension to our 
newlib which top now exploits.

I hope they can make it into release 4.0.1 .

The library's <stat> interface offers callers two new enumerators which 
relate to Intel's Alder Lake P-core and E-cores.
     STAT_TIC_ID_CORE
     STAT_TIC_TYPE_CORE

And top exploits the latter enumerator through a subtle change to the 
cpu states ('t') portion of the summary area.  With a new '5' toggle, 
instead of always showing '%Cpu', top can display '%CpP' (p-core) and 
'%CpE' (e-core) identifiers.

That '5' toggle can even be used to filter core types so only one or the 
other is seen.

This new feature is only active if those two core types are actually 
present.  However, these #defines are available should anyone wish to 
experiment with the new feature.

. affects top only, but guarantees e-cores
     PRETENDECORE

. affects the library, but requires more than 10 cpus
     PRETEND_E_CORES

Thanks in advance for the push.

Regards,

Jim