main/busybox: move /usr/bin/install to /bin/install

fixes #500

main/busybox/APKBUILD

@@ -1,7 +1,7 @@
 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=busybox
 pkgver=1.18.3
-pkgrel=2
+pkgrel=3
 pkgdesc="Size optimized toolbox of many common UNIX utilities"
 url=http://busybox.net
 arch="all"
@@ -33,6 +33,7 @@ prepare() {
 	sed -i	-e 's/(ip, _BB_DIR_BIN/(ip, _BB_DIR_SBIN/' \
 		-e 's/(lspci, _BB_DIR_USR_BIN/(lspci, _BB_DIR_USR_SBIN/' \
 		-e 's/(vi, _BB_DIR_BIN/(vi, _BB_DIR_USR_BIN/' \
+		-e 's/(install, _BB_DIR_USR_BIN/(install, _BB_DIR_BIN/' \
 		include/applets.src.h || return 1
 }