Hi,

This patch implements some binary operations for GNU vectors by traversing 
through the vector and calling scalar_binop (the former value_binop) element 
wise. The following operators have been verified:
  - add (+)
  - subtract (-)
  - multiply (*)
  - divide (/)
  - modulo* (%)
  - bitwise and* (&)
  - bitwise or* (|)
  - bitwise exclusive or* (^)
  - left-shift* (<<)
  - right-shift* (>>)
*) For integer vector types only. Tested on i686-*-linux-gnu, no regressions. 

OK to apply?

Regards
Ken Werner