permit unary plus to be used with vector types

[Zack Weinberg]

"Jan Beulich" <JBeulich@novell.com> writes:

> Up to 3.4.0, applying a unary plus to a vector type is rejected; here is
> the one line fix for this. I am not aware of an exisiting bug number for
> this.
[...]

Could you provide test cases for this and the other vector patches
you've sent, please, or else indicate which existing test cases they
fix?  Also, we'd appreciate your writing change log entries.

zw