Callgrind: event sets now consist of event groups

Offsets of groups within event sets are now
stored in a offset table as part of the event set, and
can be accessed directly. Before, offsets were hardcoded
all over the place. This should make addition of further
event groups much simpler.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11165 a5019735-40e9-0310-863c-91ae7b9d1cf9
7 files changed