bash: use /bin/bash as default shell when bash is included

though bash is included in LSB profile, it doesn't use update-alternative
to take effect and thus it's still busybox behaving as /bin/sh.

Signed-off-by: Kevin Tian <kevin.tian@intel.com>

meta/recipes-extended/bash/bash.inc

@@ -17,6 +17,11 @@ sbindir = "/sbin"
 EXTRA_OECONF = "--enable-job-control"
 export CC_FOR_BUILD = "${BUILD_CC}"
 
+ALTERNATIVE_NAME = "sh"
+ALTERNATIVE_PATH = "${base_bindir}/bash"
+ALTERNATIVE_LINK = "${base_bindir}/sh"
+ALTERNATIVE_PRIORITY = "100"
+
 do_configure () {
 	gnu-configize
 	oe_runconf

meta/recipes-extended/bash/bash_3.2.48.bb

@@ -6,7 +6,7 @@ LICENSE = "GPLv2+"
 LIC_FILES_CHKSUM = "file://COPYING;md5=fd5d9bcabd8ed5a54a01ce8d183d592a"
 DEPENDS = "ncurses"
 
-PR = "r6"
+PR = "r7"
 
 SRC_URI = "${GNU_MIRROR}/bash/bash-${PV}.tar.gz \
            http://ftp.gnu.org/gnu/bash/bash-3.2-patches/bash32-049;apply=yes;striplevel=0 \

meta/recipes-extended/bash/bash_4.1.bb

@@ -1,6 +1,6 @@
 require bash.inc
 
-PR = "r0"
+PR = "r1"
 
 SRC_URI = "${GNU_MIRROR}/bash/${BPN}-${PV}.tar.gz;name=tarball \
            http://ftp.gnu.org/gnu/bash/bash-4.1-patches/bash41-001;apply=yes;striplevel=0;name=patch001 \