RFR: Replaced hardcoded String[] args, by varargs String... where reasonable

[Jiří Vaněk]

Replaced hardcoded String[] args, by varargs String... where reasonable
    
    Once the "tool" mandatory array memebr was removed from each tool's main
    method, and considering calls from libraries, and form tests where the
    argument is very often just one file, or more readable "a1", a2"...
    without new String[]{} declaration, changed those String[] enforcing
    headers to more benevolent String...

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Commit messages:
 - Replaced hardcoded String[] args, by varargs String... where reasonable

Changes: https://git.openjdk.org/asmtools/pull/25/files
 Webrev: https://webrevs.openjdk.org/?repo=asmtools&pr=25&range=00
  Stats: 33 lines in 9 files changed: 0 ins; 0 del; 33 mod
  Patch: https://git.openjdk.org/asmtools/pull/25.diff
  Fetch: git fetch https://git.openjdk.org/asmtools pull/25/head:pull/25

PR: https://git.openjdk.org/asmtools/pull/25