subversion: add openssl location in rpath

that is required by serf library, that is required by subversion.
it seems that in some environment this rpath is explicitly required.

component/subversion/buildout.cfg

@@ -7,6 +7,7 @@ extends =
   ../libexpat/buildout.cfg
   ../libuuid/buildout.cfg
   ../neon/buildout.cfg
+  ../openssl/buildout.cfg
   ../perl/buildout.cfg
   ../pkgconfig/buildout.cfg
   ../serf/buildout.cfg
@@ -52,7 +53,7 @@ environment =
   PATH=${perl:location}/bin:${pkgconfig:location}/bin:%(PATH)s
   PKG_CONFIG_PATH=${apache:location}/lib/pkgconfig:${sqlite3:location}/lib/pkgconfig:${openssl:location}/lib/pkgconfig:${serf:location}/lib/pkgconfig
   CPPFLAGS=-I${libexpat:location}/include -I${libuuid:location}/include
-  LDFLAGS=-L${libexpat:location}/lib -Wl,-rpath=${zlib:location}/lib -Wl,-rpath=${sqlite3:location}/lib -Wl,-rpath=${apache:location}/lib -L${libuuid:location}/lib -Wl,-rpath=${libuuid:location}/lib
+  LDFLAGS=-L${libexpat:location}/lib -Wl,-rpath=${zlib:location}/lib -Wl,-rpath=${sqlite3:location}/lib -Wl,-rpath=${apache:location}/lib -L${libuuid:location}/lib -Wl,-rpath=${libuuid:location}/lib -Wl,-rpath=${openssl:location}/lib
 
 [subversion-1.9]
 recipe = hexagonit.recipe.cmmi