Move threadframe inside bindings directory, will add more stuff there.

Makefile.am

@@ -1,4 +1,6 @@
-SUBDIRS = activities po shell sugar tools threadframe
+SUBDIRS = activities bindings po shell sugar tools
+
+ACLOCAL_AMFLAGS = -I m4
 
 dbusconfdir = $(pkgdatadir)
 dbusconf_DATA = dbus-installed.conf

bindings/Makefile.am

@@ -0,0 +1 @@
+SUBDIRS = threadframe

configure.ac

@@ -36,6 +36,8 @@ activities/browser/Makefile
 activities/chat/Makefile
 activities/groupchat/Makefile
 activities/terminal/Makefile
+bindings/Makefile
+bindings/threadframe/Makefile
 shell/Makefile
 shell/data/Makefile
 shell/home/Makefile
@@ -55,5 +57,4 @@ sugar/presence/Makefile
 po/Makefile.in
 tools/Makefile
 tools/sugar-setup-activity
-threadframe/Makefile
 ])