Boostable-into is a mistake

• Prevent operation counters from running if boostable_into is allowed
• Introduce language version 2018.2 to turn on ignore_boostable_into by default
• Exclude concurrent inames from get_iname_duplication_options because they are never explicitly 'entered'

@dokempf Could you review this, particularly 2c83fe9b?

@jdsteve2 This should help a bit with your recent issues.

cc @kaushikcfd

changed the description

mentioned in merge request sumpy!79 (closed)

Looks like this causes no incompatibilities with sumpy. (see sumpy!79 (closed))

Alright--I think it's better to have this than not.

merged

mentioned in commit 0beb7a42