Install sound file on unix

for #542

configure.ac

@@ -911,6 +911,7 @@ Makefile
 share/Makefile
 share/icons/Makefile
 share/misc/Makefile
+share/sounds/Makefile
 src/Makefile
 src/common/Makefile
 src/common/dbus/Makefile

share/Makefile.am

@@ -1,3 +1,5 @@
 if DO_GTK
-SUBDIRS = icons misc
+SUBDIRS = icons sounds misc
+else
+SUBDIRS = sounds
 endif

share/sounds/Makefile.am

@@ -0,0 +1,11 @@
+sound_DATA = beep.wav
+sounddir = $(datadir)/sounds/freedesktop/stereo
+
+UPDATE_SOUND_CACHE = touch -m $(datadir)/sounds/freedesktop || :
+
+install-data-hook:
+	mv -f $(datadir)/sounds/freedesktop/stereo/beep.wav $(datadir)/sounds/freedesktop/stereo/hexchat_beep.wav
+	$(UPDATE_SOUND_CACHE);
+
+uninstall-hook:
+	$(UPDATE_SOUND_CACHE);