Various improvements for emulators/i386-wine-devel.

• Add support for a forthcoming i386-wine-compholio port [1]
• Fix binbounce for RPATH issues [1]

A port revision bump is not possible due to the complexities for the wine
ports. The impact is minimised by timing these updates closely with the
underlying updates of wine-devel.

Requested by: [1] Kris Moore <kris@pcbsd.org>
Reported by: [2] Nils Beyer <nbe@renzel.net>