[jdk11u-dev] RFR: 8296652: Restore windows aarch64 fixpath patch that was removed in 8239708 [v3]

[George Adams]

> When https://bugs.openjdk.org/browse/JDK-8239708 was backported to 11u, the Windows aarch64 specific fixpath patch added in https://github.com/openjdk/jdk11u/commit/7bdb8ac7f9f9a83779427da7a6d7f5e9ae548db7#diff-cbf3a26a7e5854d626b3c7e11c8bcb3c287ed95113360aaf220108bfa018e066was missed out. This will need restoring

George Adams has updated the pull request incrementally with two additional commits since the last revision:

 - Update basic_windows.m4
 - Update basic_windows.m4

-------------

Changes:
  - all: https://git.openjdk.org/jdk11u-dev/pull/1510/files
  - new: https://git.openjdk.org/jdk11u-dev/pull/1510/files/9c3036e6..292448fb

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1510&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1510&range=01-02

  Stats: 6 lines in 1 file changed: 3 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1510.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev pull/1510/head:pull/1510

PR: https://git.openjdk.org/jdk11u-dev/pull/1510