[Rev 01] RFR: 7902686: Jasm incorrectly sets up the SourceFile attribute on Windows platform

[Leonid Kuskov]

> The simple fix for https://bugs.openjdk.java.net/browse/CODETOOLS-7902686 that
> uses the NIO2 API to calculate a file name for the SourceFile attribute.

Leonid Kuskov 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:

  7902686: Jasm incorrectly sets up the SourceFile attribute on Windows platform

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Changes:
  - all: https://git.openjdk.java.net/asmtools/pull/5/files
  - new: https://git.openjdk.java.net/asmtools/pull/5/files/4e58a743..6b13b4f8

Webrevs:
 - full: https://webrevs.openjdk.java.net/asmtools/5/webrev.01
 - incr: https://webrevs.openjdk.java.net/asmtools/5/webrev.00-01

  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/asmtools/pull/5.diff
  Fetch: git fetch https://git.openjdk.java.net/asmtools pull/5/head:pull/5

PR: https://git.openjdk.java.net/asmtools/pull/5