tzselect: Removed spaces in calls to awk-functions

Explanation:
GNU awk fails when a user-defined-functions is called with a space like in
'myUDF ()'. It does not fail when calling builtin functions, but removed
those spaces too.

Example code:
good_awk='function echo(x) { return x; } BEGIN { print echo("x"); }'
bad_awk_='function echo(x) { return x; } BEGIN { print echo ("x"); }'
sin_awk='BEGIN { print sin (0) }'

mawk -W version 2>/dev/null | head -n1
mawk "${sin_awk}"
mawk "${good_awk}"
mawk "${bad_awk_}"
gawk -V | head -n1
gawk "${sin_awk}"
gawk "${good_awk}"
gawk "${bad_awk_}"

Output:
mawk 1.3.4 20141027
0
x
x
GNU Awk 4.0.2
0
x
gawk: cmd. line:1: error: function `echo' called with space between name
and `(',
* NEWS: Document POSIX awk fixes.
Move out-of-scope Arabian peninsula zones to 'backzone'.

* asia (Asia/Bahrain): Now links to Asia/Qatar.
(Asia/Kuwait, Asia/Aden): Now links to Asia/Riyadh.
(Asia/Muscat): Now links to Asia/Dubai.
* backzone: Move the old data here.
* checktab.awk (tztab): Remove special cases for these zones.
* NEWS: Document the above.
tzselect: Display Posix TZ format when used
* NEWS: Mention tzselect fix for POSIX TZ reporting.
* tz-art.htm: Correct the description of "The Mysterious Cube".
* backzone (Europe/Isle_of_Man): Use same format as other entries.
* northamerica, NEWS: Update Mexican Library of Congress URL.

Problem reported by Alois Treindl in:
http://mm.icann.org/pipermail/tz/2014-December/021913.html
* northamerica (US): Use lastSun for September 1945.

(Thanks to Ken Murchison.)
* leapseconds.awk, NEWS: Also output expiration date comment.

Problem reported by Martin Burnicki in:
http://www.ietf.org/mail-archive/web/tzdist/current/msg01132.html