ppp: Bug#13164 - Update configure options to have correct directory for pid

- The original poster of the bug#13164 has already tested out ppp-2.5.0 in CU179 (master)
   and identified that the startup could not find the directory /usr/var/run/. This is due
   to the change in use of the prefix command in 2.5.0 vs 2.4.9 so --localstatedir set to
   /var. runstatedir is then set to localstatedir/run ie /var/run which is then correct
   for IPFire.
- This fix needs to be implemented into CU179 so that the bug poster can test out the update
- Updated rootfile to remove additional empty line

Fixes: Bug#13164
Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>

config/rootfiles/common/ppp

@@ -71,4 +71,3 @@ usr/sbin/pppstats
 #usr/share/man/man8/pppoe-discovery.8
 #usr/share/man/man8/pppstats.8
 var/log/connect-errors
-

lfs/ppp

@@ -82,6 +82,7 @@ $(TARGET) : $(patsubst %,$(DIR_DL)/%,$(objects))
 					--prefix=/usr \
 					--sysconfdir=/etc \
 					--with-logfile-dir=/var/log \
+					--localstatedir=/var \
 					cc="gcc" \
 					cflags="$(CFLAGS)"
 	cd $(DIR_APP) && make $(MAKETUNING)