Drop srcdir reference for linker scripts.

ChangeLog

 2014-12-08  Niels Möller  <nisse@lysator.liu.se>
 
+	* aclocal.m4 (LD_VERSION_SCRIPT): Linker scripts no longer located
+	in the source tree.
+
 	* configure.ac (LIBNETTLE_MAJOR): Bump major number, now 6.
 	(LIBHOGWEED_MAJOR): Bump major number, now 5.
 

aclocal.m4

@@ -1264,9 +1264,9 @@ EOF
     AC_MSG_RESULT($have_ld_version_script)
   fi
   if test "$have_ld_version_script" = "yes";then
-	EXTRA_LINKER_FLAGS="-Wl,--version-script=\$(srcdir)/libnettle.map"
+	EXTRA_LINKER_FLAGS="-Wl,--version-script=libnettle.map"
 	AC_SUBST(EXTRA_LINKER_FLAGS)
-	EXTRA_HOGWEED_LINKER_FLAGS="-Wl,--version-script=\$(srcdir)/libhogweed.map"
+	EXTRA_HOGWEED_LINKER_FLAGS="-Wl,--version-script=libhogweed.map"
 	AC_SUBST(EXTRA_HOGWEED_LINKER_FLAGS)
   fi
 ])