DMD 0.169 release

[Georg Wrede]

 > Fixed Bugzilla 395, but there are probably more UTF bugs in
 > std.regexp.

Hmm. Fixing Phobos whenever something is brought up, is probably a good 
tack.

OTOH, quite some work may be saved if we study enough to get a feeling 
for what _not_ to even try to implement. Time savings should be substantial.

An example:

UTF-bugs in STD-Regexp may be one particularly prominent case.

One might want to develop a Robust library in D. One might instead be 
business oriented, which means, get something that works "somewhat" like 
you need, and then callously copy that.

---

The opposite tack is to adopt the PCRE library as such. Then we'd of 
course submit to the whims of the PCRC guys, but in the decades past us, 
we've seen that this guy really is at it for its own sake. (As 
especially opposed by "for the money".)

Another problem is, the UTF definition keeps changing every once in a 
while. Why not let Professionals take care of the whole shebang?