- change lines 64 and 89 to typedef struct ALIGNME( 64 ) __blake2s_state

- remove spaces before two points

- update to match the project objectives

- change the oracle functions in the benchmark to use the real pairing functions
- increase the number of pairing to 1024
- improve the error message

Add "%rcx" at the end of timetools macro.

The previous name of these functions is useful to verify that the
prec and comp functions are correct using the test_pp files

Errors occur when using valgrind

- fix the error in bench_rand.c file
- add timetools.h which contain personal benchmark macros
- update make.sh to choose a cycle benchmark for relic benchmarks
- add bench_pp2.c to use relic benchmarks on the optimization functions
- add bench_pp3.c to use personal benchmarks on the pairing functions

- add prec_t type to store the pre-computation
- add PREC_INIT macro to initialize and allocate prec_t
- add PREC_CLEAN macro to free prec_t
- add fp_param_get_slen function used to allocate the structures in prec_t
- split pp_add_k12_projc_lazy into a prec and a comp functions
  these functions are used in pp_mil_sps_k12 and pp_fin_k12_oatep
- split pp_dbl_k12_projc_lazyr into a prec and a comp functions
  these functions are used in pp_mil_sps_k12
- split pp_mil_sps_k12 into a prec and a comp functions
  these functions are used in pp_map_oatep_k12 and pp_map_sim_oatep_k12
- split pp_fin_k12_oatep into a prec and a comp functions
  these functions are used in pp_map_oatep_k12 and pp_map_sim_oatep_k12
- split pp_map_oatep_k12 into a prec and a comp functions
- split pp_map_sim_oatep_k12 into a prec and a comp functions
- add prec_sim_prep function to merge a prec_t array into a prec_t
  this function can be use to prepare the execution of pp_map_sim_oatep_k12 comp function
- add test_pp2 file to test specifically all prec and comp functions

fix build on macos when compiling with curve2251-sse

Fixed: many *_read_bin functions require non-const read-only buffer