install c-tree.h as a plugin header

From-SVN: r177690

gcc/ChangeLog

+2011-08-02  Romain Geissler  <romain.geissler@gmail.com>
+
+	* Makefile.in (PLUGIN_HEADERS): Add C_TREE_H.
+
 2011-08-12  Richard Sandiford  <rdsandiford@googlemail.com>
 
 	* config/arm/arm.c (get_label_padding): New function.

gcc/Makefile.in

@@ -4610,7 +4610,7 @@ PLUGIN_HEADERS = $(TREE_H) $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) \
   $(GGC_H) $(TREE_DUMP_H) $(PRETTY_PRINT_H) $(OPTS_H) $(PARAMS_H) plugin.def \
   $(tm_file_list) $(tm_include_list) $(tm_p_file_list) $(tm_p_include_list) \
   $(host_xm_file_list) $(host_xm_include_list) $(xm_include_list) \
-  intl.h $(PLUGIN_VERSION_H) $(DIAGNOSTIC_H) \
+  intl.h $(PLUGIN_VERSION_H) $(DIAGNOSTIC_H) ${C_TREE_H} \
   $(C_COMMON_H) c-family/c-objc.h $(C_PRETTY_PRINT_H) \
   tree-iterator.h $(PLUGIN_H) $(TREE_FLOW_H) langhooks.h incpath.h debug.h \
   $(EXCEPT_H) tree-ssa-sccvn.h real.h output.h $(IPA_UTILS_H) \