evtcache: EventTriggerCache vs Event Trigger Cache

When reading a memory contexts log I realized that we have this:

LOG: level: 2; EventTriggerCache: 8192 total in 1 blocks; 7928 free (4 chunks); 264 used
LOG: level: 3; Event Trigger Cache: 8192 total in 1 blocks; 2616 free (0 chunks); 5576 used

The reason is that BuildEventTriggerCache sets up a context "EventTriggerCache"
which house a hash named "Event Trigger Cache" which in turn creates a context
with the table name. I think it makes sense that these share the same name,
but I think it would be less confusing if they also shared the same spelling
whitespace-wise. Any reason to not rename the hash EventTriggerCache to make
the logging a tiny bit easier to read and grep?

--
Daniel Gustafsson