Check for iconv_* in -liconv as well as libiconv_* in -liconv since AIX

Check for iconv_* in -liconv as well as libiconv_* in -liconv since AIX

Mon Feb 25 23:01:53 2002  Owen Taylor  <otaylor@redhat.com>

        * configure.in acconfig.h config.h.win32.in
        glib/gconvert.c: Check for iconv_* in -liconv
        as well as libiconv_* in -liconv since AIX ships
        the system iconv in a separate library.
        Patch from Miroslaw Dobrzanski-Neumann (#72569)