Cannot build Charm with Relic 0.5

[lrusso96]

Despite #262, when I try to enable the Relic pairing module, the compilation process fails:

error: conflicting types for ‘fp_write_bin’
charm/core/math/pairing/relic/relic_interface.c:48:6: error: conflicting types for ‘fp_write_bin’
48    |void fp_write_bin(unsigned char *str, int len, fp_t a)

previous declaration of ‘fp_write_bin’ was here
 709 | void fp_write_bin(uint8_t *bin, int len, const fp_t a);