sci-astronomy/xephem: Don't link against libXp.

Closes: https://bugs.gentoo.org/650404
Package-Manager: Portage-2.3.41, Repoman-2.3.9

sci-astronomy/xephem/files/xephem-3.7.7-no_xprint.patch

@@ -0,0 +1,11 @@
+--- a/GUI/xephem/Makefile
++++ b/GUI/xephem/Makefile
+@@ -30,7 +30,7 @@
+ endif
+ 
+ # for linux and Apple OS X
+-XLIBS = -lXm -lXp -lXt -lXext -lXmu -lX11
++XLIBS = -lXm -lXt -lXext -lXmu -lX11
+ CFLAGS := $(LIBINC) $(CFLAGS)
+ LIBS = $(LIBLNK) $(XLIBS) $(LIBLIB) -lm
+ 

sci-astronomy/xephem/xephem-3.7.7.ebuild

@@ -1,4 +1,4 @@
-# Copyright 1999-2017 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
@@ -23,6 +23,7 @@ DEPEND="${RDEPEND}
 PATCHES=(
 	"${FILESDIR}/${P}-respect_env_vars.patch"
 	"${FILESDIR}/${P}-implicits.patch"
+	"${FILESDIR}/${P}-no_xprint.patch"
 )
 
 src_prepare() {