libctf: add ctf_member_count

This returns the number of members in a struct or union, or the number
of enumerations in an enum.  (This was only available before now by
iterating across every member, but it can be returned much faster than
that.)

include/
	* ctf-api.h (ctf_member_count): New.

libctf/
	* ctf-types.c (ctf_member_count): New.
	* libctf.ver: New public function.

1 files changed, 1 insertions, 0 deletions

diff --git a/libctf/libctf.ver b/libctf/libctf.ver
index b8c5133..77b380c 100644
--- a/libctf/libctf.ver
+++ b/libctf/libctf.ver
@@ -73,6 +73,7 @@ LIBCTF_1.0 {
 
 	ctf_member_info;
 	ctf_array_info;
+	ctf_member_count;
 
 	ctf_enum_name;
 	ctf_enum_value;