* kernel/Kernel.tex.nw: remove e820scan, can just use ramscan()
* kernel/Kernel.tex.nw: remove CPU0PT1, don't need 8MB mapped memory from bootstrap code
* kernel/init/user/boot/boot.c: misc
* kernel/Kernel.tex.nw: rename starting assembly functions
* sys/src/make_trace.txt: new trace
* Makefile: tags target
* kernel/memory/386/memory.c: more complete memsummary
* kernel/memory/portdat_memory.h:
* kernel/Kernel.tex.nw:
* kernel/Kernel.tex.nw: comments
* kernel/Kernel.tex.nw: remove umbscan, and misc adjustments
* kernel/init/386/apbootstrap.h: change, not sure why, maybe because change
some fundamental addresses
* kernel/Kernel.tex.nw: misc
* kernel/Kernel.tex.nw: remove MemReserved unused enum
* kernel/Kernel.tex.nw: comments
* assemblers/5a/l.s: unused I think, was probably test files
* assemblers/8a/a.y: misc
* kernel/Kernel.tex.nw: comments
* kernel/Kernel.tex.nw: more comments
* kernel/Kernel.tex.nw: aspectize Qmem, rename txt2data, move kbase klimit
from Confmem to better place