Set a value for the default autorun session
keymap: support combining shift & capslock with altgr

Add support for combining shift & caps lock keys with altgr so that
capital national characters can be written. There was some support for
shift+altgr in xrdp-keygen but it was never actually used.
dump-keymaps: generate 'pl' keymap
Generate correct xfree86 keymaps when evdev is used

Use a mapping table to map xfree86 keycodes to evdev keycodes and obtain
consistent keysyms for keymaps. This way, it is now possible to generate
correct keymaps when evdev driver is used on host.
Update keymaps
Install and enable 0415/pl keymap
configure: Correct the use of AC_ARG_ENABLE() macro

Fix the use of AC_ARG_ENABLE() so that --disable-foo configure options
are respected.

The third and fourth arguments of AC_ARG_ENABLE are respectively
ACTION-IF-GIVEN and ACTION-IF-NOT-GIVEN. The former is executed if
either --enable-foo or --disable-foo is specified on command line, the
latter if neither is. Additionally, the specified value is stored in
$enable_foo variable.

Therefore, the common practice is to provide null ACTION-IF-GIVEN
(and use the value of $enable_foo), and to set a default for $enable_foo
in ACTION-IF-NOT-GIVEN. The commit does that, and adjusts the further
conditionals to test $enable_foo properly.
configure: Add --disable-pam and deprecate --enable-nopam

Use simple logic for PAM control to avoid confusion and double
negations. Keep --enable-nopam deprecated for backwards compatibility.
configure: Ensure PKG_CONFIG before querying systemd unit path

Use PKG_PROG_PKG_CONFIG to ensure that $PKG_CONFIG is set before it is
used to query the systemd unit install path.
Merge pull request #181 from mgorny/configure-fixes

Configure fixes
sesman: check for null from crypt()
Merge pull request #180 from mgorny/evdev-genkeys

Generate correct xfree86 keymaps when evdev is used
Xorg: update readme.txt
Merge pull request #173 from moobyfr/default-autorun-ini

Set a value for the default autorun session
pulse: fix for recording delay
chansrv: some recording fixes
librfxcodec=649a7ad
Xorg: yuv rfx unsigned
librfxcodec=61f6e92
added xorgxrdp submodule