build: install a login manager session entry
This makes it possible to run Weston session from GDM (and possibly
other login managers).
diff --git a/Makefile.am b/Makefile.am
index 3a37be0..b10d6bf 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -156,6 +156,11 @@
pkgconfigdir = $(libdir)/pkgconfig
pkgconfig_DATA = src/weston.pc
+EXTRA_DIST += $(wayland_session_DATA)
+
+wayland_sessiondir = $(datadir)/wayland-sessions
+wayland_session_DATA = src/weston.desktop
+
westonincludedir = $(includedir)/weston
westoninclude_HEADERS = \
src/version.h \