math/mpc: Update to version 1.3.1

Update to MPC version 1.3.1 with the following changes:
 - New function: mpc_agm
 - New rounding modes "away from zero", indicated by the letter "A"
   and corresponding to MPFR_RNDA on the designated real or imaginary part.
 - New experimental ball arithmetic.
 - New experimental function: mpc_eta_fund
 - Bug fixes:
   . mpc_asin for asin(z) with small |Re(z)| and tiny |Im(z)|
   . mpc_pow_fr: sign of zero part of result when the base has up to
     sign the same real and imaginary part, and the exponent is an even
     positive integer
   . mpc_fma: the returned int value was incorrect in some cases
     (indicating whether the rounded real/imaginary parts were
     smaller/equal/greater than the exact values), but the computed
     complex value was correct.

math/mpc/Makefile

@@ -1,5 +1,5 @@
 PORTNAME=	mpc
-PORTVERSION=	1.2.1
+PORTVERSION=	1.3.1
 CATEGORIES=	math devel
 MASTER_SITES=	GNU
 
@@ -23,6 +23,6 @@ USE_LDCONFIG=	yes
 
 INFO=		mpc
 PLIST_FILES=	include/mpc.h \
-		lib/libmpc.a lib/libmpc.so lib/libmpc.so.3 lib/libmpc.so.3.2.1
+		lib/libmpc.a lib/libmpc.so lib/libmpc.so.3 lib/libmpc.so.3.3.1
 
 .include <bsd.port.mk>

math/mpc/distinfo

@@ -1,3 +1,3 @@
-TIMESTAMP = 1630767623
-SHA256 (mpc-1.2.1.tar.gz) = 17503d2c395dfcf106b622dc142683c1199431d095367c6aacba6eec30340459
-SIZE (mpc-1.2.1.tar.gz) = 838731
+TIMESTAMP = 1679993201
+SHA256 (mpc-1.3.1.tar.gz) = ab642492f5cf882b74aa0cb730cd410a81edcdbec895183ce930e706c1c759b8
+SIZE (mpc-1.3.1.tar.gz) = 773573