There was confusion in the compiler between INFO and HINT type messages.
The problem is that INFO messages will be suppressed by -s/-ss in
kmcomp, but we actually still want HINT messages to be emitted. So I
have gone ahead and renamed CERR_INFO to CERR_HINT and updated all the
places.
This was necessary in order for the kmcomp e2e test 194 to pass.
Fixes#355.
Fixes#1710.
This is structured as a feature so it is tested as such, but was part of
the set of fixes scheduled for 15.0 beta. Any rule in a group that
Keyman Developer assesses as 'unreachable' will receive a hint message.
The current rule match is fairly simplistic -- it only does an exact
comparison -- so duplication which is indirect, through `any(store)`
references in the context would still result in unreachable rules that
are not picked up.
