Fix installation for slave port of emulators/wine-devel.
Wine switched to using an internal install script and removed logic to create
the underlying directories. As explained in a comment from Makefile:
Wine expects the install script to make any missing directories, and the default
internal tool (/tools/install-sh) does that however the default install script
by Ports does not.
Disable the specification of the INSTALL scripts and allow wine to use the