Create and install rsakeys.ini

Use install-data-hook to ensure restrictive permissions on rsakeys.ini.

Don't create rsakeys.ini in init scripts. This makes xrdp functional upon
"make install" without relying on the init scripts.

Packagers should not package rsakeys.ini, it should be created when the
package is installed.

keygen/Makefile.am

@@ -13,3 +13,12 @@ xrdp_keygen_SOURCES = keygen.c
 
 xrdp_keygen_LDADD = \
   $(top_builddir)/common/libcommon.la
+
+xrdpsysconfdir = $(sysconfdir)/xrdp
+
+install-data-hook:
+	umask 077 && \
+	  ./xrdp-keygen xrdp $(DESTDIR)$(xrdpsysconfdir)/rsakeys.ini
+
+uninstall-hook:
+	rm -f $(DESTDIR)$(xrdpsysconfdir)/rsakeys.ini