#71 Missing stdbool.h in lensfun.h

[rconstruct]

When building darktable i had a error

             from /home/lpt2/repo/darktable/build/src/iop/introspection_lens.c:54:

/usr/local/include/lensfun/lensfun.h:2630:5: error: unknown type name ‘bool’
bool Reverse;

It seems stdbool.h was missing. Find attached the patch.

[Torsten Bronger]

Thank you, I included your patch. Just out of curiosity: Since when is this necessary?