configure.sh: Check for -mstack-protector-guard= support
configure.sh: Check for -mstack-protector-guard= support

On host/arch combinations where we need it, check that GCC supports
-mstack-protector-guard=. Advise the user of the minimum GCC version
required if support is not present (verified by checking GCC commit logs
for first appearance of this option in a release).

mato/solo5,mato/solo5,Solo5/solo5,Solo5/solo5,mato/solo5