Support to build in the recent mingw environment

In the recent mingw environment, this patch is needed for defining DS_MODALFRAME etc.
To show a filedescription on the file property.

This patch can show a filedescription on the property of lilypad.exe file.
Merge branch 'patch-1' into utf-8-support
Merge branch 'patch-3' into utf-8-support
ver bumps up