pptp-linux: add from OE-Classic, update and tidy up

* Update to 1.7.2
* Drop unnecessary override of do_compile
* Make LICENSE more accurate
* Add LIC_FILES_CHKSUM
* Add SUMMARY
* Minor formatting/ordering tweaks

Based on a patch by Vladimir Redzhepoff <vladimir.redzhepoff@promwad.com>

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>

meta-networking/recipes-protocols/pptp-linux/pptp-linux-1.7.2/options.pptp

@@ -0,0 +1,30 @@
+#
+# Lock the port
+#
+lock
+
+#
+# We don't need the tunnel server to authenticate itself
+#
+noauth
+
+#
+# Turn off transmission protocols we know won't be used
+#
+nobsdcomp
+nodeflate
+
+#
+# We want MPPE
+# (option naming specific to ppp 2.4.0 with unofficial patch)
+#
+#mppe-40
+mppe-128
+#mppe-stateless
+
+#
+# We want a sane mtu/mru 
+# (ppp 2.4.0 with unofficial patch)
+#
+#mtu 1000
+#mru 1000

meta-networking/recipes-protocols/pptp-linux/pptp-linux_1.7.2.bb

@@ -0,0 +1,29 @@
+SUMMARY = "Client for Microsoft PPTP VPNs"
+DESCRIPTION = "PPTP Client is a Linux, FreeBSD, NetBSD \
+ and OpenBSD client for the proprietary Microsoft Point-to-Point \
+ Tunneling Protocol, PPTP. Allows connection to a PPTP based \
+ Virtual Private Network (VPN) as used by employers and some \
+ cable and ADSL internet service providers."
+HOMEPAGE = "http://pptpclient.sourceforge.net"
+SECTION = "network"
+LICENSE = "GPLv2+"
+LIC_FILES_CHKSUM = "file://COPYING;md5=8ca43cbc842c2336e835926c2166c28b"
+
+PR = "r0"
+
+SRC_URI = "${SOURCEFORGE_MIRROR}/sourceforge/pptpclient/pptp-${PV}.tar.gz \
+           file://options.pptp"
+
+SRC_URI[md5sum] = "4c3d19286a37459a632c7128c92a9857"
+SRC_URI[sha256sum] = "e98ae0065d2a39fa3131654ff28cb7070e996f668ed6d0e7d9a445b8d37694bc"
+
+S = "${WORKDIR}/pptp-${PV}"
+
+do_install() {
+        install -d ${D}${sbindir} ${D}${sysconfdir}/ppp ${D}${mandir}/man8
+        install -m 555 pptp ${D}${sbindir}
+        install -m 644 pptp.8 ${D}${mandir}/man8
+        install -m 644 ${WORKDIR}/options.pptp ${D}${sysconfdir}/ppp
+}
+
+RDEPENDS_${PN} = "ppp"