vim 7.3.882

Closes #18996.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>
Allow pipe fd to be inherited under Ruby 2.0
Use #grep where it will suffice
Make some groups non-capturing
FormulaInstaller: initialize @tab
FormulaInstaller: this local is an ivar now
FormulaLock: fix uninitialized ivar
Fix another handful of warnings