[GL3.3] Timer Query

http://www.opengl.org/registry/specs/ARB/timer_query.txt

Add to enum QueryTarget:

TIME_ELAPSED 0x88BF
TIMESTAMP 0x8E28

Note: The Timestamp token is only legit to use with GetQueryiv command, not Begin-/End-Query commands. Separate enums?

Add to enum GetPName:

TIMESTAMP 0x8E28

Functions:

C: void QueryCounter(uint id, enum target);
New: void QueryCounter(uint id, QueryCounterTarget target);

enum QueryCounterTarget
{
TIMESTAMP 0x8E28
}

C: void GetQueryObjecti64v(uint id, enum pname, int64 *params);
New: void GetQueryObjecti64v(uint id, GetQueryObjectParam pname, int64 *params);

C: void GetQueryObjectui64v(uint id, enum pname, uint64 *params);
New: void GetQueryObjectui64v(uint id, GetQueryObjectParam pname, uint64 *params);