mingw: Add implementation of realpath()

The mingw port used _fullpath() until now, but the behaviour is not exactly
the same as realpath()'s on unix; major difference being that it doesn't
return an error for non-existing files, which would bypass main's error
checking and bail out without any error message.

Also realpath() will return forward slashes only since main() relies on that.

1 files changed, 2 insertions, 0 deletions

diff --git a/windows/realpath.h b/windows/realpath.h
new file mode 100644
index 000000000..77798acd5
--- /dev/null
+++ b/windows/realpath.h
@@ -0,0 +1,2 @@
+
+extern char *realpath(const char *path, char *resolved_path);