gettext markup of library sources

[Benjamin Kosnik]

Ugh. Excuse my mailer! So rude.

>+// XXX These are only placeholders.  They let people mark up the library
>+// sources without breaking things, and will be probably be somewhere else
>+// once localization of the library itself is functioning.
>+//#define _(msgid)     gettext (msgid)
>+//#define _(msgid)     (msgid)
>+#define __N(msgid)     (msgid)

What I was going to say was: kill the commented defines, and say
something about why __N and not the usual _N. You might also want to
point people at functexcept.cc.

best,
benjamin