* Revert "don't pass CFLAGS and fix _FORTIFY_SOURCE errors (#116)"
This reverts commit fa4486d23f.
* jemalloc-sys: hardening strerror_r function detection
test on strerror_r can fail due to reasons other than strerror_r
itself, so add an additional test to determine the failure is
expected.
Also remove stale arch condition.
Close#108.
Signed-off-by: Jay Lee <BusyJayLee@gmail.com>