[vectorIntrinsics] RFR: 8263001: Add cast nodes from single precision float types to interger types implementation for Arm SVE [v2]

[Wang Huang]

> * add sve_fcvtzs & sve_fcvtzu
> * add F2I F2S F2B F2L
> * change macro name `VECTOR_CAST_I2F` -> `VECTOR_CAST_X2X` becase  we reuse it.

Wang Huang 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:

  8263001: Add cast nodes from single precision float types to interger types implementation for Arm SVE

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Changes:
  - all: https://git.openjdk.java.net/panama-vector/pull/46/files
  - new: https://git.openjdk.java.net/panama-vector/pull/46/files/6621ae26..ec664249

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=panama-vector&pr=46&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=panama-vector&pr=46&range=00-01

  Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/panama-vector/pull/46.diff
  Fetch: git fetch https://git.openjdk.java.net/panama-vector pull/46/head:pull/46

PR: https://git.openjdk.java.net/panama-vector/pull/46