Restore CODECOV=1 to "unoptimized builds for Codecov"
Restore CODECOV=1 to "unoptimized builds for Codecov"

These lines seem to have been removed by mistake at some point.  Without them, the "unoptimized builds for Codecov" are not actually built with optimization off.
besser82/libxcrypt,besser82/libxcrypt,besser82/libxcrypt,besser82/libxcrypt