RFR: Intentionally removed ACC_SUPER class modifier was causing hotswap to fail

[Jiří Vaněk]

When jasm's  disasm, modify, asm cycle output binary was used for class
hotswap, remote JDK was not accepting it with java.lang.UnsupportedOperationException:
class redefinition failed: attempted to change the class modifiers
beacuse of ommited supoer keyword (although it have already no real
reason)

This patch is returning the keyword without conditions, when it was
included in original bytecode

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Commit messages:
 - Intentionally removed ACC_SUPER class modifier was causing hotswap to fail

Changes: https://git.openjdk.org/asmtools/pull/26/files
 Webrev: https://webrevs.openjdk.org/?repo=asmtools&pr=26&range=00
  Stats: 30 lines in 3 files changed: 24 ins; 0 del; 6 mod
  Patch: https://git.openjdk.org/asmtools/pull/26.diff
  Fetch: git fetch https://git.openjdk.org/asmtools pull/26/head:pull/26

PR: https://git.openjdk.org/asmtools/pull/26