uif2iso: add commandSuffix, rework INSTALL. (#2704)
uif2iso: add commandSuffix, rework INSTALL. (#2704)

Keep REVISION unchanged because this is a neutral change for all
existing arches. The sole purpose of this change is to make this
recipe ready for x86_64/x86 hybrid, as explained in #2690.

Begasus/haikuports,moochris/haikuports,moochris/haikuports,nielx/haikuports,Begasus/haikuports,moochris/haikuports,haikuports/haikuports,haikuports/haikuports,nielx/haikuports,haikuports/haikuports,Begasus/haikuports,Begasus/haikuports,haikuports/haikuports,Begasus/haikuports,nielx/haikuports,haikuports/haikuports