Fix configure.ac buglet when used with autoconf 2.70#1198

Merged

jkbonfield merged 1 commit intosamtools:developfrom

jmarshall:autoconf-2.70-compat

Jan 4, 2021

Commits on Jan 1, 2021

Don't set $host_alias as that confuses autoconf 2.70
jmarshall
committed