- Most Java classes aren't deprecated. To avoid building `firSymbol`
in such cases, this commit adds a simple heuristic which checks the
class's annotations for the presence of one of the deprecation
annotations recognized by the Kotlin compiler.
- Note that annotations are compared via simple names, so there is a
slight margin of error. However, comparing class IDs is more costly in
my tests, because getting an annotation's class ID is not as cheap as
getting its simple name.
Marco Pennekamp
f9fb718b37