* windows/Windows.tex.nw:
* profilers/stats.c:
* kernel/core/386/dat.h: reduce bss!
* kernel/conf/386/mkfile: cleanup
* include/a.out.h: misc
* debuggers/tracers/strace.c: comments
* Makefile: install also 9qemu
* debuggers/tracers/ktrace.c: remove code for other platforms
* kernel/Kernel_extra.tex.nw: ktrace!