getfields(2): add missing SOURCE file
devproc: change address format in segment file to %8p (thanks eekee)

the original format for addresses was %8lux which was changed
to %p for amd64. this broke linuxemu which assumes fixed format
in the segment file. as a compromize we change it to %8p and
amd64 port of linuxemu will hopefully use a more robust parser :)
add newt(1): nntp client for use with nntpfs(4)
fortunes: The only document that claims Plan 9 runs in 4 megabytes is the FAQ on our home page.
fortunes: No one googles local variable names.
newt: clean up regexp
webfs: do not unescape escape
eqn: fix parallel build (thanks eekee)

dont just mv y.tab.c, this can cause y.tab.c and y.tab.h to
be accidently regenerated breaking parallel build.
spin(1): fix typo
merge
process acpi interrupt source override entries in a 2nd pass over the madt (APIC) table (thanks erik)

according to erik, virtualbox puts the source overrides
before the ioapic entries so the addirq() call fails
as no ioapics have been declared yet. use a second pass
over the table after we processed the apic entries.