ICU update

[Riccardo Mottola]

Hi,

to update gnustep-base I'd need an ICU update on Solaris 9: the one 
there gets detected, but is too old.
(I guess GNUstep could be better at version detecion, but that's another 
thing).

NSDateFormatter.m: In function '-[NSDateFormatter(PrivateMethods) 
_resetUDateFormat]':
NSDateFormatter.m:949:21: error: 'UDAT_PATTERN' undeclared (first use in 
this function)
NSDateFormatter.m:949:21: note: each undeclared identifier is reported 
only once for each function it appears in
<built-in>: At top level:
NSDateFormatter.m:101:1: warning: cast increases required alignment of 
target type [-Wcast-align]

I think I need at least v52

Did somebody already attempt this.. is it known impossible and/or 
something that will cause a total dependecy breakage?

Riccardo