Complete build options for Pthread API

[elfring]

Would you like to add the configuration script "AX_PTHREAD" to your build specification?

[allinurl]

I can certainly see it being useful. Thanks!

[elfring]

Do you reject this update suggestion now?

[allinurl]

Not rejecting it, just not entirely sure the benefits and how it differs from a simple AC_CHECK_LIB([pthread])?

[elfring]

I find your second feedback strange in comparison to the previous one.

Would you like to consider any additional configuration checks?

[allinurl]

I don't object to the functionality that the macro offers, in fact, it appears to be useful. However, I prefer not to introduce new dependencies that are not part of the OS unless it actually solves a current portability issue, which at this point I'm not aware of. Also, a quick search in Google shows that there could be some issues between AX_PTHREAD and OSX. Anyways, thank you for the suggestion, I will keep this in mind.