RFR: 7903402: jdis: tool writes incorrect StackMapTable if the first same_frame has type 0

[Leonid Kuskov]

This is the fix for [https://bugs.openjdk.org/browse/CODETOOLS-7903402](https://bugs.openjdk.org/browse/CODETOOLS-7903402)<br>

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Commit messages:
 - 7903402: jdis: tool writes incorrect StackMapTable if the first same_frame has type 0
 - 7903401: jtreg fails if set of jdk tests process jasm,jdis files with defects
 - Merge branch 'openjdk:at8' into at8
 - 7902888: Excess entries in BootstrapMethods with the same bsm, bsmKind, bsmArgs

Changes: https://git.openjdk.org/asmtools/pull/51/files
 Webrev: https://webrevs.openjdk.org/?repo=asmtools&pr=51&range=00
  Issue: https://bugs.openjdk.org/browse/CODETOOLS-7903402
  Stats: 2237 lines in 54 files changed: 852 ins; 1145 del; 240 mod
  Patch: https://git.openjdk.org/asmtools/pull/51.diff
  Fetch: git fetch https://git.openjdk.org/asmtools pull/51/head:pull/51

PR: https://git.openjdk.org/asmtools/pull/51