pg_dumpall bug in PG 8.0b3 Win32 port

Hi,

I tried to use pg_dumpall in Win32 and receive a error message like this:

pg_dump.exe: [archiver (db)] connection to database "test" failed:
FATAL: user "'postgres'" does not exist

Well, the word "'postgres'" is the word is between simple quotations
marks and later between double quotations marks.
Then, I assume that the error must be in string that pg_dumpall mounts
to execute pg_dump

I modified pg_dumpall.c lines between 160 and 270 to add a #ifndef
WIN32... #endif clause to pgdumpopts to store
the parameters with double quotations intead simple quotation marks in
case of WIN32 ports
But, I don't have how to test it.
Please, somebody can test and fix the pg_dumpall.c of oficial source ?

Thanks in advance

Luiz