base-system-busybox: replaces -> conflicts to forbid installation on a running system.

srcpkgs/base-system-busybox/template

@@ -1,7 +1,7 @@
 # Build template for 'base-system-busybox'.
 pkgname=base-system-busybox
 version=1.22.1
-revision=4
+revision=5
 wrksrc="busybox-${version}"
 homepage="http://www.busybox.net"
 hostmakedepends="perl"
@@ -21,7 +21,7 @@ _FEATURES="acpid coreutils cpio dash diffutils dosfstools findutils awk
 	traceroute util-linux wget which whois xz"
 for f in ${_FEATURES}; do
 	provides+="${f}-${version}_${revision} "
-	replaces+="${f}>=0 "
+	conflicts+="${f}>=0 "
 done
 
 pre_build() {