Add chklocale.c to msvc build

Hi,
attached patch adds chklocale.c to pgportfiles in Mkvcbuild perl module
(not really worth the .diff :))
This fixes MSVC build (see buildfarm errors with unresolved reference
for _pg_get_encoding_from_locale).

--
Regards
Petr Jelinek (PJMODOS)

Index: Mkvcbuild.pm
===================================================================
RCS file: /projects/cvsroot/pgsql/src/tools/msvc/Mkvcbuild.pm,v
retrieving revision 1.17
diff -c -r1.17 Mkvcbuild.pm
*** Mkvcbuild.pm    27 Sep 2007 19:53:44 -0000    1.17
--- Mkvcbuild.pm    29 Sep 2007 05:28:16 -0000
***************
*** 44,50 ****

      our @pgportfiles = qw(
        crypt.c fseeko.c getrusage.c inet_aton.c random.c srandom.c
!       unsetenv.c getaddrinfo.c gettimeofday.c kill.c open.c rand.c
        snprintf.c strlcat.c strlcpy.c copydir.c dirmod.c exec.c noblock.c path.c pipe.c
        pgsleep.c pgstrcasecmp.c qsort.c qsort_arg.c sprompt.c thread.c
        getopt.c getopt_long.c dirent.c rint.c win32error.c);
--- 44,50 ----

      our @pgportfiles = qw(
        crypt.c fseeko.c getrusage.c inet_aton.c random.c srandom.c
!       unsetenv.c getaddrinfo.c gettimeofday.c chklocale.c kill.c open.c rand.c
        snprintf.c strlcat.c strlcpy.c copydir.c dirmod.c exec.c noblock.c path.c pipe.c
        pgsleep.c pgstrcasecmp.c qsort.c qsort_arg.c sprompt.c thread.c
        getopt.c getopt_long.c dirent.c rint.c win32error.c);