mksh: add version 56

The MirBSD Korn Shell is a permissively licensed shell currently used
by Android.

Signed-off-by: Eduardas Meile <eduardas.m@fods.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-shells/mksh/mksh_56.bb

@@ -0,0 +1,36 @@
+DESCRIPTION = "The MirBSD Korn Shell - an enhanced version of the public domain ksh"
+HOMEPAGE = "http://www.mirbsd.org/mksh.htm"
+SECTION = "base/shell"
+
+LICENSE = "${@bb.utils.contains("TCLIBC", "glibc", "MirOS & ISC", "MirOS", d)}"
+LIC_FILES_CHKSUM = "file://main.c;beginline=6;endline=25;md5=7204fec4d12912f2a13fe8745bc356f9 \
+                    file://strlcpy.c;beginline=1;endline=17;md5=d953f28f0c43ee29e238ec9bc15df2a0 \
+                   "
+
+SRC_URI = "http://www.mirbsd.org/MirOS/dist/mir/mksh/mksh-R56c.tgz"
+
+SRC_URI[md5sum] = "4799a9ac6d55871d79ba66713d928663"
+SRC_URI[sha256sum] = "dd86ebc421215a7b44095dc13b056921ba81e61b9f6f4cdab08ca135d02afb77"
+
+inherit update-alternatives
+
+S = "${WORKDIR}/${PN}"
+
+ALTERNATIVE_${PN} = "sh"
+ALTERNATIVE_LINK_NAME[sh] = "${base_bindir}/sh"
+ALTERNATIVE_TARGET[sh] = "${base_bindir}/${BPN}"
+ALTERNATIVE_PRIORITY = "100"
+
+do_compile() {
+    sh ${S}/Build.sh -r
+}
+
+do_install() {
+    install -d ${D}${base_bindir}
+    install -m 0755 ${S}/mksh ${D}${base_bindir}/mksh
+
+    install -d ${D}${sysconfdir}/skel
+    install -m 0644 ${S}/dot.mkshrc ${D}${sysconfdir}/skel/.mkshrc
+}
+
+RPROVIDES_${PN} += "${@bb.utils.contains('DISTRO_FEATURES', 'usrmerge', '/bin/sh', '', d)}"