ppp: version bump to 2.4.5

Bump to the current version of PPP.

A few of the patches are either in 2.4.5 or something functionally equivalent is, so those patches were removed.

1 patch was added to accommodate pppol2pv3_addr which is referenced in a linux kernel header file, but isn't defined in the kernel header files packaged with PPP.

Redux: re-instate the commenting out of the exponential back-off as requested by Felix.

Signed-off-by: Philip Prindeville <philipp@redfish-solutions.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27818 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/ppp/patches/202-no_strip.patch

@@ -46,7 +46,7 @@
  
 --- a/pppd/plugins/rp-pppoe/Makefile.linux
 +++ b/pppd/plugins/rp-pppoe/Makefile.linux
-@@ -39,9 +39,9 @@ rp-pppoe.so: libplugin.a plugin.o
+@@ -43,9 +43,9 @@ rp-pppoe.so: plugin.o discovery.o if.o c
  
  install: all
  	$(INSTALL) -d -m 755 $(LIBDIR)
@@ -57,7 +57,7 @@
 +	$(INSTALL) -c -m 555 pppoe-discovery $(BINDIR)
  
  clean:
- 	rm -f *.o *.so
+ 	rm -f *.o *.so pppoe-discovery
 --- a/pppdump/Makefile.linux
 +++ b/pppdump/Makefile.linux
 @@ -17,5 +17,5 @@ clean: