List of problem identifiers in zookeeper.h

Submitted on behalf of Jacob. Is is possible for us to address this in the next release? Will cause b/w compatibility issues for c client users but sounds like a good idea to fix now.
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I've attached a file with the problem identifiers. All of these
identifiers are unprotected by a ZOO_ (or something similar) prefix.

I've also looked at zookeeper.jute.h and the names of some these structs
are really unfortunate – theyre sure to collide with some headers e.g.
Stat. There's also some exceptions to the consistent naming scheme –
op_result_t, String_vector, Id_vector are the ones I noticed.

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These enum constants are unprotected:

typedef enum

{LOG_LEVEL_ERROR=1,LOG_LEVEL_WARN=2,LOG_LEVEL_INFO=3,LOG_LEVEL_DEBUG=4}

ZooLogLevel;

extern ZOOAPI const int PERM_READ;
extern ZOOAPI const int PERM_WRITE;
extern ZOOAPI const int PERM_CREATE;
extern ZOOAPI const int PERM_DELETE;
extern ZOOAPI const int PERM_ADMIN;
extern ZOOAPI const int PERM_ALL;

extern ZOOAPI struct Id ANYONE_ID_UNSAFE;
extern ZOOAPI struct Id AUTH_IDS;

extern ZOOAPI struct ACL_vector OPEN_ACL_UNSAFE;
extern ZOOAPI struct ACL_vector READ_ACL_UNSAFE;
extern ZOOAPI struct ACL_vector CREATOR_ALL_ACL;

extern ZOOAPI const int EPHEMERAL;
extern ZOOAPI const int SEQUENCE;

extern ZOOAPI const int EXPIRED_SESSION_STATE;
extern ZOOAPI const int AUTH_FAILED_STATE;
extern ZOOAPI const int CONNECTING_STATE;
extern ZOOAPI const int ASSOCIATING_STATE;
extern ZOOAPI const int CONNECTED_STATE;

extern ZOOAPI const int CREATED_EVENT;
extern ZOOAPI const int DELETED_EVENT;
extern ZOOAPI const int CHANGED_EVENT;
extern ZOOAPI const int CHILD_EVENT;
extern ZOOAPI const int SESSION_EVENT;
extern ZOOAPI const int NOTWATCHING_EVENT;