On some architectures this test fails due to several
reasons:
- missing headers
- use of valueAt instead of count in ConCS. Indeed,
valueAt acts similarly to count but avoids some validity
check that are required when the hashmap is growing.
This patch also:
- removes inaccurate comments from bricks.test.
- test more features for hashset.
* spot/bricks/brick-hashset,
tests/core/bricks.cc,
tests/core/bricks.test: Here.