| Bugfix | |
| * Fix armclang compilation error when targetting certain Arm M-class CPUs | |
| (Cortex-M0, Cortex-M0+, Cortex-M1, Cortex-M23, SecurCore SC000). Enable | |
| bignum optimisations for most Arm platforms when compiling with -O0, | |
| (previously optimisations were not available in this case). Fixes #1077. |