Fixed error: printf: 0.250: invalid number

[denilsonsa]

When running rerun2 on my system:

/home/denilsonsa/bin/rerun2: line 64: printf: 0.250: invalid number

This unfortunately seems to happen due to some locale setting that makes comma as the decimal separator:

LC_NUMERIC=nl_NL.UTF-8

Alternatively, we could directly specify the cooldown constant as nanoseconds, avoiding the conversion done through printf and sed.

[tartley]

Thanks for the PR. I'm happy to gratefully merge this. But also, am curious about the suggestion to store cooldown in nanoseconds, since that would make the code slightly simpler. Let me try that out. If it results on overall simpler coder I'll publish a PR as an alternative to this.

[tartley]

Nah, now I've remembered what this code looks like, I prefer your fix. Thank you!