RFR: 8264193: Remove TRAPS parameters for modules and defaultmethods

[Harold Seigel]

Please review this change for JDK-8264193 to remove unneeded TRAPS parameters from modules and default methods files.  Besides removing TRAPS, Modules::get_named_module() was changed to return an oop instead of a jobject, removing its need for a TRAPS parameter.

This change was tested with Mach5 tiers 1 and 2 on Linux, Mac OS, and Windows, and Mach5 tiers 3-5 on Linux x64.

Thanks, Harold

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Commit messages:
 - 8264193: Remove TRAPS parameters for modules and defaultmethods

Changes: https://git.openjdk.java.net/jdk/pull/3247/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3247&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8264193
  Stats: 61 lines in 8 files changed: 1 ins; 13 del; 47 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3247.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3247/head:pull/3247

PR: https://git.openjdk.java.net/jdk/pull/3247