primecount-7.6-bp155.1.5

- Update to primecount-7.6 (API & ABI are backwards compatible).
- Requires latest primesieve-11.0 library.
- Fix missing header include in print.hpp.

- Update to primecount-7.4 (API & ABI are backwards compatible).
- Compatible with latest primesieve-8.0 library.
- Sieve.cpp: Improved pre-sieving.
- Sieve.cpp: Optimize COUNT_UNSET_BIT() macro.
- Split up main CMakeLists.txt into multiple modules.
- Reduced the number of memory allocations.

- Update to primecount-7.3 (API & ABI are backwards compatible).
- Improved big.Little CPU detection.
- Improved nth prime performance for small n.
- Reduced the number of memory allocations.
- Many CMake build system improvements.

- Add pkg-config/pkgconf support (primecount.pc).
- Improved cache size detection on big.LITTLE CPUs.
- Improved C/C++ API documentation (libprimecount.md).

- Update to primecount-7.1 (API & ABI are backwards compatible).
- Minor pi(x) & phi(x, a) speed improvements.
- PhiTiny.cpp: Use compressed phi(x, a) lookup table.
- phi.cpp: More correct usage of recursive phi(x, a) formula.
- PiTable.cpp: Add PrimePi(x) lookup table for x < 64 * 240.
- generate_phi.hpp: More correct usage of recursive phi(x, a) formula.
- nth_prime.cpp: Cache small primes <= 1009.
- nth_prime.cpp: Improve error handling, n must be >= 1.
- appveyor.yml: Fix debug build.

- Update to primecount-7.0 (API & ABI are backwards compatible).
- AC.cpp: New algorithm with improved scaling.
- AC_libdivide.cpp: New algorithm with improved scaling.
- B.cpp: Improved scaling due to independent threads.
- P2.cpp: Improved scaling due to independent threads.
- LoadBalancerAC.cpp: New thread scheduler for AC algorithm.
- LoadBalancerS2.cpp: Improve load balancing of S2_hard & D.
- LoadBalancerP2.cpp: Rewritten, now similar to other load balancers.
- SegmentedPiTable.cpp: Decrease size to x^(1/4).
- util.cpp: Improve scaling using larger default alpha_z = 2.
- imath.hpp: Optimize ilog2() & next_power_of_2() using __builtin_clzll().

- Update to primecount-6.4.
- Fixed an integer overflow in the B formula.
- Reduced memory usage of SegmentedPiTable by 1.5x.

- Update to primecount-6.2

- Update to primecount-6.1

- address review feedback

- Add libprimecount documentation

- Initial package version

- Update to primecount-7.14 (API & ABI are backwards compatible).
- Fix libdivide.h issue with GCC 15: #76.
- Move x86 cpuid code from cpuid.hpp to src/x86/cpuid.cpp.
- Move generate.hpp code to src/generate_primes.cpp.
- Move generate_phi.hpp code to src/phi_vector.cpp.
- int128_t.hpp: Rename namespace port to pstd (portable std namespace).
- Sieve.hpp: Tune AVX512 code.
- Sieve.hpp: Branchfree bitmask calculation.
- cpu_supports_popcnt.hpp: Simplify, move preprocessor checks to new multiarch_x86_popcnt.cmake.
- multiarch_avx512_vpopcnt.cmake: Tune AVX512 code.
- multiarch_x86_popcnt.cmake: Detect x86 POPCNT.
- CMakeLists.txt: Use CMake list for all compile time definitions.

- Update to primecount-7.13 (API & ABI are backwards compatible).
- CMakeLists.txt: New WITH_MULTIARCH option (default ON).
- Sieve.hpp: New AVX512 popcount algorithm for x86 CPUs.
- Sieve.hpp: New ARM SVE popcount algorithm.
- int128.cmake: Improve int128_t support for Windows.
- OpenMP.cmake: Improve LLVM/Clang OpenMP detection.
- Add preliminary MSVC 128-bit support.

- Update to primecount-7.12 (API & ABI are backwards compatible).
- On x86 CPUs check using CPUID if CPU supports POPCNT.
- CMakeLists.txt: Remove WITH_POPCNT=OFF option.
- New dynamic/adaptive load balancing for AC algorithm.
- LogarithmicIntegral.cpp: Fix infinite loop on Linux i386.
- RiemannR.cpp: Fix infinite loop on Linux i386.
- RiemannR.cpp: Faster and simpler RiemannR_inverse(x).

- Update to primecount-7.11 (API & ABI are backwards compatible).
- Increase pi(x) cache size to 2 KiB.
- Detect incompatible command-line options.
- Faster RiemannR(x) and RiemannR_inverse(x) implementations.
- test/iroot.cpp: Fix musl libc issue.
- test/Li.cpp: Speed up test.
- Renamed option --Ri to -R or --RiemannR.
- Renamed option --Ri-inverse to --RiemannR-inverse.
- Improve status output on Windows.

- Update to primecount-7.10 (API & ABI are backwards compatible).
- Improve CMake libatomic detection.
- Fix potential integer overflows in Li_inverse(x) and Ri_inverse(x).
- Added new internal nth_prime_approx(n).