num-utils: Update homepage/livecheck; modernize checksums

sysutils/num-utils/Portfile

@@ -2,6 +2,11 @@ PortSystem 1.0
 
 name			num-utils
 version			0.5
+revision            0
+checksums           rmd160  54ed62109fdbeaf4fe2006a072e1e4e778ab146c \
+                    sha256  03592760fc7844492163b14ddc9bb4e4d6526e17b468b5317b4a702ea7f6c64e \
+                    size    31845
+
 categories		sysutils math
 license			GPL-2+
 platforms		any
@@ -14,9 +19,8 @@ long_description	The num-utils are a set of programs for dealing with \
 				sort, cut, etc. these utilities work on data from both \
 				standard in and data from files.
 
-homepage		http://suso.suso.org/programs/num-utils/
-master_sites	${homepage}/downloads/
-checksums		md5 58eed69761c2da97c3bfdfa422633427
+homepage            https://suso.suso.org/xulu/Num-utils
+master_sites        https://suso.suso.org/programs/num-utils/downloads/
 
 depends_lib		bin:perl:perl5
 
@@ -39,3 +43,7 @@ conflicts-append    argyll
 
 # conflicts with normalize on ${prefix}/bin/normalize
 conflicts-append    normalize
+
+livecheck.type      regex
+livecheck.url       ${homepage}
+livecheck.regex     /${name}-\(\[0-9.\]+)[quotemeta ${extract.suffix}]