RFR: 7903129: jextract does not handle @argfile [v3]

[Athijegannathan Sundararajan]

> Missed CommandLine.parse call in JextractTool.run method.

Athijegannathan Sundararajan has updated the pull request incrementally with one additional commit since the last revision:

  forgot to add helloargs

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Changes:
  - all: https://git.openjdk.java.net/jextract/pull/4/files
  - new: https://git.openjdk.java.net/jextract/pull/4/files/9f4cf3c6..950cb6b1

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jextract&pr=4&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jextract&pr=4&range=01-02

  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jextract/pull/4.diff
  Fetch: git fetch https://git.openjdk.java.net/jextract pull/4/head:pull/4

PR: https://git.openjdk.java.net/jextract/pull/4