RFR: 8328074: Add jcheck whitespace checking for assembly files

[Magnus Ihse Bursie]

As part of the ongoing effort to enable jcheck whitespace checking to all text files, it is now time to address assembly (.S) files. The hotspot assembly files were fixed as part of the hotspot mapfile removal, so only a single incorrect jdk library remains.

The main issue with `libjsvml` was inconsistent line starts, sometimes using tabs. I used the `expand` unix command line tool to replace these with spaces.

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Commit messages:
 - Enable jcheck whitespace checks for .S files
 - Run expand on libjsvml

Changes: https://git.openjdk.org/jdk/pull/18268/files
  Webrev: Webrev is not available because diff is too large
  Issue: https://bugs.openjdk.org/browse/JDK-8328074
  Stats: 279424 lines in 73 files changed: 0 ins; 0 del; 279424 mod
  Patch: https://git.openjdk.org/jdk/pull/18268.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18268/head:pull/18268

PR: https://git.openjdk.org/jdk/pull/18268