xrdp missing pam support and startwm.sh entries

Hi,

I'm using xrdp 0.9.16 from edge and found that there are two important features missing:

1. xrdp-sesman lacks of pam support, which prevents elogind from detecting user session and creating corresponding XDG_RUNTIME_DIR folders. Also, this prevents 2FA implementations like duo_unix to function. Build logs of xrdp show that --disable-pam was explicitly used - was there a reason for this?

2. /etc/xrdp/startwm.sh lacks support of Alpine's xinitrc script, namely, it should have something similar to this:

  # alpine
  if [ -r /etc/X11/xinit/xinitrc ]; then
    pre_start
    . /etc/X11/xinit/xinitrc
    post_start
    exit 0
  fi

so that it can properly detect per user's .xinitrc and start wm accordingly. Without that section xrdp-sesman will fail to start wm.

Thanks.