celera-assembler 8.1: Fails to build with clang
celera-assembler 8.1: Fails to build with clang

error: use of undeclared identifier 'use_safe_malloc_instead'

Closes #573

andrewjpage/homebrew-science,goxberry/homebrew-science,heuermh/homebrew-science,quantumsteve/homebrew-science,maplesond/homebrew-science,pditommaso/homebrew-science,parcollet/homebrew-science,pmelsted/homebrew-science,aeantipov/homebrew-science,philippbayer/homebrew-science,joshbode/homebrew-science,ge11232002/homebrew-science,kozo2/homebrew-science,dpo/homebrew-science,ahundt/homebrew-science,DabeDotCom/homebrew-science