RFR: 8294971: jdk.jlink jdk.tools.jimage.JImageTask is using ASM to verify classes [v2]

[Adam Sotona]

> jdk.jlink jdk.tools.jimage.JImageTask is using ASM to verify classes
> 
> This patch converts ASM calls to Classfile API.
> 
> Please review.
> 
> Thanks,
> Adam

Adam Sotona has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 190 commits:

 - Merge branch 'master' into JDK-8294971-jlink-jimage
 - Merge branch 'master' into JDK-8294971-jlink-jimage
 - 8294971: jdk.jlink jdk.tools.jimage.JImageTask is using ASM to verify classes
 - removed obsolete javadoc from implementation classes
 - minor fix in CodeBuilder and added test cases to LDCTest
 - EntryMap::nextPowerOfTwo delegates to Long:numberOfLeadingZeros
 - fixed CodeBuilder:constantInstruction for -0.0d and -0.0f values and added test
 - Merge branch 'master' into JDK-8294982
 - fixed new lines at end of file
 - package jdk.internal.classfile.jdktypes moved to jdk.internal.classfile.java.lang.constant
 - ... and 180 more: https://git.openjdk.org/jdk/compare/e26cc526...37fac1d2

-------------

Changes: https://git.openjdk.org/jdk/pull/12943/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12943&range=01
  Stats: 15 lines in 2 files changed: 10 ins; 2 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/12943.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12943/head:pull/12943

PR: https://git.openjdk.org/jdk/pull/12943