Log Message:
-----------
Make iconv work like other optional libraries for MSVC.
Modified Files:
--------------
pgsql/src/tools/msvc:
Solution.pm (r1.55 -> r1.56)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/tools/msvc/Solution.pm?r1=1.55&r2=1.56)