Fix Win32 build

1. Revert 7d8fed6 (rendered redundant by c3ef65f)
2. Change path to Cwd in make_ext.pl on Win32--Win32 runs make_ext.pl from
the win32/ sub-directory, not from the top-level directory.
3. Likewise change path to Cwd in makefile invocations of xsubpp and
splittree.pl.

1 files changed, 1 insertions, 1 deletions

diff --git a/make_ext.pl b/make_ext.pl
index e81ca51ac1..b0be209a70 100644
--- a/make_ext.pl
+++ b/make_ext.pl
@@ -3,7 +3,7 @@ use strict;
 use warnings;
 use Config;
 BEGIN {
-    unshift @INC, 'ext/Cwd';
+    unshift @INC, $^O eq 'MSWin32' ? '../ext/Cwd' : 'ext/Cwd';
 }
 use Cwd;