[patch] generate TAGS for params.def file

[Aldy Hernandez]

I hate grepping around for those --param definitions, so I've fixed it.

I also merged all the *.def files into one pattern.

OK for trunk?

gcc/

        * Makefile.in (TAGS): Merge all the *.def files into one pattern.
        Handle params.def.

diff --git a/gcc/Makefile.in b/gcc/Makefile.in
index 0bde7acf914..878ce7bc452 100644
--- a/gcc/Makefile.in
+++ b/gcc/Makefile.in
@@ -4135,8 +4135,7 @@ TAGS: lang.tags
              ../include/*.h ../libiberty/*.c \
              ../libcpp/*.c ../libcpp/include/*.h \
              --language=none --regex="/\(char\|unsigned 
int\|int\|bool\|void\|HOST_WIDE_INT\|enum [A-Za-z_0-9]+\) 
[*]?\([A-Za-z_0-9]+\)/\2/" common.opt        \
-             --language=none 
--regex="/\(DEF_RTL_EXPR\|DEFTREECODE\|DEFGSCODE\).*(\([A-Za-z_0-9]+\)/\2/" 
rtl.def tree.def gimple.def \
-             --language=none --regex="/DEFTIMEVAR (\([A-Za-z_0-9]+\)/\1/" 
timevar.def \
+             --language=none 
--regex="/\(DEF_RTL_EXPR\|DEFTREECODE\|DEFGSCODE\|DEFTIMEVAR\|DEFPARAM\|DEFPARAMENUM5\)[
 ]?(\([A-Za-z_0-9]+\)/\2/" rtl.def tree.def gimple.def timevar.def params.def \
                ; \
        etags --include TAGS.sub $$incs)