nodejs: replaces iojs.

srcpkgs/nodejs/template

@@ -1,7 +1,7 @@
 # Template file for 'nodejs'
 pkgname=nodejs
 version=4.0.0
-revision=1
+revision=2
 wrksrc=node-v${version}
 hostmakedepends="pkg-config python"
 makedepends="zlib-devel python-devel
@@ -20,6 +20,8 @@ desc_option_http_parser="Enable shared http-parser"
 # broken with libressl, use bundled openssl instead
 build_options_default="libuv http_parser"
 
+replaces="iojs>=0"
+
 do_configure() {
 	local _args