configure: Fix test for ability to link with ICU libraries.

[Alexandre Julliard]

Scott Bambrough <scottb at xandros.com> writes:

> Modified search for ICU libraries.  Now search user defined directory
> (if defined in ICU_LIB_DIR),/usr/local/lib and /usr/lib (in that
> order). Now search for:
> 1) user defined libraries if defined in one or both of ICUUC_LIB and
> ICUDATA_LIB
> 2) libsicuuc.so, libsicudata.so
> 3) libicuuc.so, libicudata.so

The code is too complicated, you should be able to do that with a
simple loop to try the various names. Also you can't use 'libdir' as a
loop variable, that's one of the configure standard variables.

-- 
Alexandre Julliard
julliard at winehq.org