- Update to 2.15.0.1:
* The tarball for calc version 2.15.0.0 was missing version.h.
The version.h is now listed as part of the calc distribution.
See gh/lcn2/calc#112

- Update to 2.15.0.0:
* Added the several new trigonometric functions
* Added log2(x [,eps]) builtin function
* The sign element in a ZVALUE is now of type SIGN, which is either
SB32 when MAJOR_VER < 3, or a bool otherwise
* Added new logn(x, n [,eps]) builtin to compute logarithms to base n.
- Add calc-2.15.0.0-versionh.patch to fix build
See gh/lcn2/calc#112

- Update to 2.14.3.5:
* Under macOS, to reduce dependency chains, we remove functions
and data that are unreachable by the entry point or exported
symbols. In particular, the macOS linker is used with both
"-dead_strip" and "-dead_strip_dylibs".
* The libcalc shared library is now linked with libcustcalc.