Update to libmcp version 1.1.0 which brings the following changes:

• New functions: . mpc_cmp_abs . mpc_rootofunity
• Rewrite of the testing framework and a new mpcbench tool, used with make bench.
• Bug fixes and improvements of existing functions: . Fixed compilation with mpfr 4.0.0. . Fixed handling of over- and underflows with directed rounding in the "other direction" for mpc_cos, mpc_sin, mpc_exp and mpc_pow . Fixed a bug in mpc_atan(0,y) with |y| near 1.
• Minimally required dependencies are now gmp 5.0.0 and mpfr 3.0.0 (way below what the standard Ports Collection provides).

PR: 225968
Tested by: antoine (exp-run)