leptonica: update to 1.87.0

- switch to Github

graphics/leptonica/Portfile

@@ -2,27 +2,28 @@
 
 PortSystem          1.0
 
-name                leptonica
-version             1.86.0
+PortGroup           github  1.0
+
+github.setup        DanBloomberg leptonica 1.87.0
+github.tarball_from releases
 revision            0
+
+description         image processing and image analysis library
+long_description    ${name} is an {*}${description}.
+
 categories          graphics science devel
 license             BSD
 
 maintainers         {stromnov @stromnov} openmaintainer
 
-description         image processing and image analysis library
-long_description    ${name} is an {*}${description}.
+checksums           rmd160  d94a571272ad3ecdd359d91cabc3d354f556bda7 \
+                    sha256  c73363397f96eb1295602bf44d708a994ad42046c791bf03ea0505d829bdb6a7 \
+                    size    14802808
 
-homepage            http://www.leptonica.org/
-master_sites        http://www.leptonica.org/source/
+depends_build-append \
+                    port:pkgconfig
 
-checksums           rmd160  cfbbf0b6087749509fc110e3ba6e1ee1a0c3388c \
-                    sha256  1fa08e40bb37fd45802d5e6e7b43927449a5c47d4608ef99d3bd3f0fa76baedc \
-                    size    14802116
-
-depends_build       port:pkgconfig
-
-depends_lib         port:tiff \
+depends_lib-append  port:tiff \
                     port:zlib \
                     port:libpng \
                     path:include/turbojpeg.h:libjpeg-turbo \
@@ -43,6 +44,4 @@ configure.cppflags-prepend \
 configure.ldflags-prepend \
                     -L${prefix}/lib/giflib5/lib
 
-livecheck.type      regex
-livecheck.url       http://www.leptonica.org/download.html
-livecheck.regex     {leptonica-(\d+(?:\.\d+)*)\.[tz]}
+github.livecheck.regex {([0-9.]+)}