RFR: 8253761: Wrong URI syntax printed by jar --describe-module [v4]

[Christian Stein]

> This commit replaces `"/!"` with `"!/"` in order to generate
> valid URIs when printing a module description of a modular
> JAR file. A valid URI is described here: [1]
> 
> https://bugs.openjdk.java.net/browse/JDK-8253761
> 
> [1] https://docs.oracle.com/en/java/javase/15/docs/api/java.base/java/net/JarURLConnection.html

Christian Stein has refreshed the contents of this pull request, and previous commits have been removed. The
incremental views will show differences compared to the previous content of the PR. The pull request contains one new
commit since the last revision:

  8253761: Fix URI syntax of jar --describe-module

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/393/files
  - new: https://git.openjdk.java.net/jdk/pull/393/files/b8ead33a..49ee4d2b

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=393&range=03
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=393&range=02-03

  Stats: 5 lines in 2 files changed: 0 ins; 0 del; 5 mod
  Patch: https://git.openjdk.java.net/jdk/pull/393.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/393/head:pull/393

PR: https://git.openjdk.java.net/jdk/pull/393