Compile error with MSVC

Hi,

I tried to compile using Visual C++ 2005. But I got the following
errors.

.\src\backend\parser\keywords.c(22) : fatal error C1083: 'parser/parse.h': No such file or directory

I saw src/tools/msvc/pgbison.bat. Why does it copy
src/backend/parser/parser.h to src/include/parser directory?

src/tools/msvc/pgbison.bat:14

if "%1" == "src\backend\parser\gram.y" call :generate %1 src\backend\parser\gram.c src\include\parser\parse.h

I think we should add "src/backend" directory to include path. Because
if gram.c is newer than gram.y, include/parser/parse.h does not
copied.

Then, I saw clean.bat. It deletes the files generated by Bison. I
think we don't have to delete these files.

The attached patch for HEAD is fixed them.
Regards,
--
Yoshiyuki Asaba
y-asaba(at)sraoss(dot)co(dot)jp