import CRC32C code
add CRC32 variant based on CRC32C implementation
fix Makefile
remove code for table generation (fixed tables are stored in respective files)
refactoring
add -msse4 when checking for smmintrin.h
move check
bump version after CRC32C import and refactoring
Merge branch 'experimental' into experimental-debian
bump version after CRC32C import and refactoring