RFR: 8187826: Avoid using reflection to bootstrap NamedFunctions

[Claes Redestad]

Hi,

please review this fix to resolve MemberNames instead of
going via reflection to get the Method when setting up
various NamedFunctions, since this no longer appears to be
necessary to break bootstrap cycles:

Webrev: http://cr.openjdk.java.net/~redestad/8187826/jdk.00/
Bug: https://bugs.openjdk.java.net/browse/JDK-8187826

This avoids loading a few classes and reduces cycles taken
to bootstrap indy by ~2M (1.4%) and instructions count by
~1M (0.7%) in a minimal MH-exercising test.

Thanks!

/Claes