[PATCH] (riscv64) Fix Java bridgetest failure

[PATCH] (riscv64) Fix Java bridgetest failure

* Refactor the code related to struct processing. Fix Java bridge-
  test failure. Fixed test list:
  * bridgetest-javaserver
  * [CUT] smoketest
  * [JUT] forms_unoapi_1
  * [JUT] forms_unoapi_2
  * [JUT] forms_unoapi_3
  * [JUT] forms_unoapi_4
* Clean higher bit to prevent compiler generate wrong code when
  pyuno calls functions through UNO environment. This fixes some
  weired uitest failure.
* Reorder the datatype list. Optimize the inserting args section in
  uno2cpp.cxx.
* Remove some unused code.

Change-Id: I74330126d31d847485b1d81fc34376b1d020f886

Gbp-Pq: Name fix-riscv64-bridge.diff