Improve the fasta.jl benchmark. The old code ran the full suite in 117s, the new one runs in 7s, which is 1.4x C. See here for full benchmarks: http://benchmarksgame.alioth.debian.org/u32/benchmark.php?test=fasta&lang=all&id=1&data=u32
Merge pull request #4571 from karbarcca/master

Improve the fasta.jl benchmark