gcc: re-add version suffix.

Revert "gcc: don't configure with version suffix."

This reverts commit 88fd6aab011068138140e0578a2a5c208cf69f2b.
gcc: update 4.8.3_1 bottle.

Closes #29943.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
added MPI support for fftw

Closes #29949.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
simulate "ruby -EUTF-8:UTF-8", but safe for 1.8

It is not possible to add -EUTF-8:UTF-8 to the shebang line on older
rubies.
fftw: update 3.3.4 bottle.