disable installing a3 for now, so that people don't scratch their heads when it doesn't work

git-svn-id: svn://localhost/ardour2/branches/3.0@12251 d708f5d6-7413-0410-9779-e7cbd77b26cf

wscript

@@ -728,3 +728,12 @@ def i18n_po(bld):
 
 def i18n_mo(bld):
     bld.recurse (i18n_children)
+
+def install_not_supported(bld):
+    print 'Installing Ardour 3 is currently unsupported. Run it via the command ./ardev from within the gtk2_ardour directory.'
+    sys.exit (1)
+
+from waflib import Build
+class install(Build.InstallContext):
+    cmd = 'install'
+    fun = 'install_not_supported'