Add support for MUSL based Operation Systems#449

Merged

eddelbuettel merged 2 commits intoRcppCore:masterfrom

lostie:support-for-alpine-linux-distribution

Mar 23, 2016

Commits on Mar 21, 2016

Add support for Alpine linux by checking for GLIBC flag
lostie
committed

Commits on Mar 23, 2016

Add custom __MUSL__ flag to detect musl based distributions
lostie
committed