Allow to change config file (sub)directory

This allows the `xrdp` part of the path `/etc/xrdp` where config files
are placed to be customizable. This change is useful when trying the
stable version and the devel version alternately.

tools/chkpriv/Makefile.am

@@ -21,7 +21,8 @@ xrdp_droppriv_LDADD = \
 
 SUBST_VARS = sed \
    -e 's|@pkglibexecdir[@]|$(pkglibexecdir)|g' \
-   -e 's|@sysconfdir[@]|$(sysconfdir)|g'
+   -e 's|@sysconfdir[@]|$(sysconfdir)|g' \
+   -e 's|@sysconfsubdir[@]|$(sysconfsubdir)|g'
 
 subst_verbose = $(subst_verbose_@AM_V@)
 subst_verbose_ = $(subst_verbose_@AM_DEFAULT_V@)

tools/chkpriv/xrdp-chkpriv.in

@@ -20,7 +20,7 @@
 # mode
 
 # Change these if they do not match your installation
-CONF_DIR=@sysconfdir@/xrdp
+CONF_DIR=@sysconfdir@/@sysconfsubdir@
 XRDP_INI="$CONF_DIR"/xrdp.ini
 SESMAN_INI="$CONF_DIR"/sesman.ini
 RSAKEYS_INI="$CONF_DIR"/rsakeys.ini