devel/libxtend: Update to 0.1.3.5

Regenerate man pages with improved auto-c2man
Adds missing return value sections and improves formatting

devel/libxtend/Makefile

 PORTNAME=	libxtend
-DISTVERSION=	0.1.3-1
-DISTVERSIONSUFFIX=	-g495664d
+DISTVERSION=	0.1.3-5
+DISTVERSIONSUFFIX=	-ge78bd27
 CATEGORIES=	devel
 
 MAINTAINER=	jwb@FreeBSD.org

devel/libxtend/distinfo

-TIMESTAMP = 1630025057
-SHA256 (outpaddling-libxtend-0.1.3-1-g495664d_GH0.tar.gz) = ae7f625e823460f892a1eedc17a3d3a67337e221e22e6bfd2811dd69272ec468
-SIZE (outpaddling-libxtend-0.1.3-1-g495664d_GH0.tar.gz) = 36993
+TIMESTAMP = 1631744668
+SHA256 (outpaddling-libxtend-0.1.3-5-ge78bd27_GH0.tar.gz) = 82e68286328784ee832e6de7f68012d2eafd097c9d63866cffa52600394eba98
+SIZE (outpaddling-libxtend-0.1.3-5-ge78bd27_GH0.tar.gz) = 37916