Revision 302408

- Update to 2.4.2
- Remove dependency on gmake
- Remove build dependency on perl
- Remove hints for pthread
- Depend on glew instead of using port's built-in version
- Use newer USE_SDL syntax
- Use port's built-in version of ares
- Install a nice-looking desktop icon

PR:	ports/170533
Submitted by:	Kevin Zheng <kevinz5000@gmail.com>