xboard: update dependencies

games/xboard/Portfile

@@ -7,7 +7,6 @@ version             4.9.1
 revision            3
 categories          games
 maintainers         web.de:macport {khindenburg @kurthindenburg} openmaintainer
-platforms           darwin
 license             GPL-3+
 
 description         X frontend for Crafty, GNUChess, Internet Chess Servers, \
@@ -27,11 +26,13 @@ checksums           rmd160  95d109876556fdb3a50086365e4254afc66c0381 \
 
 patchfiles          patch-xboard.diff
 
-depends_build-append    port:pkgconfig
+depends_build-append    port:gettext \
+                        port:pkgconfig \
+                        bin:makeinfo:texinfo
 depends_lib-append      path:lib/pkgconfig/cairo.pc:cairo \
                         path:lib/pkgconfig/glib-2.0.pc:glib2 \
                         path:lib/pkgconfig/gdk-pixbuf-2.0.pc:gdk-pixbuf2 \
-                        port:gettext \
+                        port:gettext-runtime \
                         path:lib/pkgconfig/librsvg-2.0.pc:librsvg
 
 configure.args      --enable-zippy
@@ -64,4 +65,3 @@ If you get this error when starting xboard:\
 try this from the terminal:
 xboard -font -misc-fixed-bold-r-normal--13-120-75-75-c-80-iso8859-15
 "
-