Startup performance

[trask]

Carrying over discussion from #5724:

• Evil matchers: jax-rs 1, jax-rs 2 annotations, and jax-ws
• Matchers that match based on annotation (not quite evil, but not highly optimized): external annotations, withspan, spring-ws)

Some performance results from #5724 (comment):

with jaxrs 2 annotations instrumentation:

match count=10154036, time=16974ms
locate count=32589, time=9313ms

with jaxrs 2 annotations instrumentation disabled:

match count=9965431, time=6738ms
locate count=9279, time=2094ms

additionally with external annotations, withspan, spring-ws instrumentations disabled:

match count=9368871, time=4852ms
locate count=3258, time=1008ms

In retrospect I realized that I probably should have counted only the classes located during matching. Then the last test would give

locate count=45, time=19ms

[trask]

Closing, startup perf can always be better, but @laurit has made a lot of improvement to it since this was opened