- Determine where the runtime loader got mapped to when a dynamically
linked process was exec()'ed, and map samples in that address range
into the appropriate buckets in the runtime loader's profile.
- Fix a bug that caused generated gmon.out profiles to be out of
whack. Use saturating arithmetic when incrementing a bucket.
- Improve a few comments.
Approved by: re (scottl)
e3724c7825