Re: pgsql: Add option to use ICU as global locale provider

I found a different problem with src/test/icu/: it fails altogether
if the prevailing locale is "C", because then the database encoding
defaults to SQL_ASCII which our ICU code won't cope with.  I'm not
sure if that explains any of the buildfarm failures, but it broke
my local build (yeah, I'm that guy).  I un-broke it for the moment
by forcing the test to use UTF8 encoding, but do we want to do
anything smarter than that?

            regards, tom lane