[crac] RFR: 8348869: [CRaC] Restore args are split by whitespaces incorrectly

[Timofei Pushkin]

Fixes the issue by creating a new property `sun.java.crac_command` with spaces escaped. On restore, JVM parses this string de-escaping symbols.

Replaces abandoned #101.

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Commit messages:
 - Restore args are split by whitespaces incorrectly

Changes: https://git.openjdk.org/crac/pull/193/files
  Webrev: https://webrevs.openjdk.org/?repo=crac&pr=193&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8348869
  Stats: 169 lines in 8 files changed: 164 ins; 0 del; 5 mod
  Patch: https://git.openjdk.org/crac/pull/193.diff
  Fetch: git fetch https://git.openjdk.org/crac.git pull/193/head:pull/193

PR: https://git.openjdk.org/crac/pull/193