Add required new port files to MSVC builds.

src/tools/msvc/Mkvcbuild.pm

@@ -50,8 +50,9 @@ sub mkvcbuild
       chklocale.c crypt.c fseeko.c getrusage.c inet_aton.c random.c srandom.c
       getaddrinfo.c gettimeofday.c inet_net_ntop.c kill.c open.c erand48.c
       snprintf.c strlcat.c strlcpy.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 win32env.c win32error.c);
+      pgcheckdir.c pgmkdirp.c pgsleep.c pgstrcasecmp.c qsort.c qsort_arg.c
+      sprompt.c thread.c getopt.c getopt_long.c dirent.c rint.c win32env.c
+      win32error.c);
 
     $libpgport = $solution->AddProject('libpgport','lib','misc');
     $libpgport->AddDefine('FRONTEND');