Remove -t ZONETABTYPE option from 'tzselect'.

This was experimental, and it appears that the tzwinnow
approach will be better.  We need to cut a new stable
release soon, and the -t option might make it harder to
integrate tzwinnow later, so let's omit -t for now.
* .gitignore: Remove time.tab.
* Makefile (ZONETABTYPE): Remove.  All uses removed.
(time.tab): Remove.  All uses removed.
* Theory: Omit discussion of time.tab.
* zone-time.awk: Remove.
* tzselect.8: Omit -t and time.tab.
* tzselect.ksh (ZONETABTYPE): Remove.  All uses removed.
Remove -t ZONETABTYPE option.
* zone.tab: Restore first comment line, since there's no longer
a need to distinguish this file from time.tab.
* zic.8 (EXTENDED EXAMPLE): Adjust to match what's in 'europe' now.

Reported by Alois Treindl in
<http://mm.icann.org/pipermail/tz/2011-August/008722.html>.
Fix minor problems found by static checking.

Mostly this moves links so that files can be zic'ed standalone.
* antarctica (Antarctica/McMurdo): Move to australasia,
* australasia (Pacific/Johnston): Move to northamerica.
* checktab.awk: Add special case for America/Montreal, pending
the tzwinnow approach.
* northamerica (America/Anguilla, America/Dominica, America/Grenada)
(America/Guadeloupe, America/St_Barthelemy, America/Marigot)
(America/Montserrat, America/St_Kitts, America/St_Lucia)
(America/St_Vincent, America/Tortola, America/St_Thomas):
Move to southamerica.
* southamerica: Receive above-described moves.
* zic.c (writezone): Remove unused local.
Revert the change that added meta-information to version-3 format.

Further testing found that it was incompatible with Ubuntu 12.04 glibc
so this feature requires redesign and more testing.
* Makefile (ZFLAGS): Remove comment about name and version info.
Make it an empty var instead.
* tzfile.5, tzfile.h: Remove description of meta-information.
* zic.8: Remove options -n and -o.
* zic.c: Don't include <stddef.h>.
(genoption, genoptions, genname, addgenoption, writevalue): Remove.
(usage, main, writezone): Remove support for -n and -o.