math/libbraiding: Improve port

* Use upstream release archive (removes USES= autoreconf and patch file)
* Change USES= compiler:c++11-lang to compiler:c++17-lang
* Use USE_CXXSTD helper instead of CXXFLAGS
* Remove USES= pathfix (doesn't work)
* Use --with-pkgconfigdir configure switch

PR:		284092
Approved by:	portmgr (maintainer timeout, 2+ weeks)

math/libbraiding/Makefile

@@ -1,6 +1,7 @@
 PORTNAME=	libbraiding
-PORTVERSION=	1.3.1
+DISTVERSION=	1.3.1
 CATEGORIES=	math
+MASTER_SITES=	https://github.com/miguelmarco/${PORTNAME}/releases/download/${DISTVERSION}/
 
 MAINTAINER=	thierry@FreeBSD.org
 COMMENT=	C++ library for computations on braid groups
@@ -8,14 +9,14 @@ WWW=		https://github.com/jeanluct/braidlab
 
 LICENSE=	GPLv3
 
-USE_GITHUB=	yes
-GH_ACCOUNT=	miguelmarco
-
-USES=		autoreconf compiler:c++11-lang libtool pathfix pkgconfig
-
-CXXFLAGS+=	-std=c++17
-GNU_CONFIGURE=	yes
-INSTALL_TARGET=	install-strip
+USES=		compiler:c++17-lang libtool pkgconfig
+USE_CXXSTD=	c++17
 USE_LDCONFIG=	yes
 
+GNU_CONFIGURE=	yes
+
+CONFIGURE_ARGS=	--with-pkgconfigdir=${PREFIX}/libdata/pkgconfig
+
+INSTALL_TARGET=	install-strip
+
 .include <bsd.port.mk>

math/libbraiding/distinfo

@@ -1,3 +1,3 @@
-TIMESTAMP = 1736966252
-SHA256 (miguelmarco-libbraiding-1.3.1_GH0.tar.gz) = c0910b342fe6ecee20759617263c20cf45d827abc6eac83ffd84d4565633ce3c
-SIZE (miguelmarco-libbraiding-1.3.1_GH0.tar.gz) = 43662
+TIMESTAMP = 1736994521
+SHA256 (libbraiding-1.3.1.tar.gz) = d1738c3ad64a90ca0ad968d2e3c9069b0de08abcf37fb44a151a229d88203950
+SIZE (libbraiding-1.3.1.tar.gz) = 393142

math/libbraiding/files/patch-configure.ac

@@ -1,7 +0,0 @@
---- configure.ac.orig	2024-11-06 18:51:29 UTC
-+++ configure.ac
-@@ -8,4 +8,3 @@ AC_OUTPUT
- LT_INIT
- AC_CONFIG_FILES([Makefile lib/Makefile libbraiding.pc])
- AC_OUTPUT
--s