Config.in.diff (kristov)
* Adds configuration support for MPPE and MULTILINK.

pppd.mk.diff (kristov)
* Fetches the sources from Debian instead from samba.org.
* Disables the use of PAM which is enabled by a Debian patch.

pppd-crypt.patch (kristov)
* Links against libcrypt unconditionally, avoids checking for crypt.h on the
  host.

pppd-error.patch (kristov)
* Replaces error() with fprintf()/syslog() when building pppoe-discovery as
  the error() function from pppd/utils.c is not built/linked in.

pppd-makefile.patch (kristov)
* Disable features in Makefile (they are passed through the command line).

pppd-override-LDFLAGS.patch (kristov)
* Allows LDFLAGS read from the command line to be extended.

pppd-mtu.patch.disabled (jw5 (?))
* Makes the link MTU equal to the minimum of interface MTU and link MRU.
* currently DISABLED as it is unclear why the patch is necessary: The comments
  in the code explicitly allow the MTUs and MRUs to be different.

pppd-precompiled-filter.patch.disabled (jw5)
* Adds support for precompiled PPP filters.
* currently DISABLED as we always link to (shared) libpcap.so such that we
  don't save space when replacing filters with precompiled filters.
