Fix timespecmul() macro on architectures where members of the struct timespec are 32-bit. I.e. armv6.
Fix timespecmul() macro on architectures where members of the
struct timespec are 32-bit. I.e. armv6.

sobomax/libelperiodic,sobomax/libelperiodic,sobomax/libelperiodic,sobomax/libelperiodic