RFR: 8255562: delete UseRDPCForConstantTableBase [v4]

[Xin Liu]

> UseRDPCForConstantTableBase was a SPARC-exclusive flag. Sparc has been removed 
> from hotspot, so remove this flag.

Xin Liu has updated the pull request incrementally with one additional commit since the last revision:

  8255562: delete UseRDPCForConstantTableBase
  
  revert the change of Arguments::handle_aliases_and_deprecation.
  Arguments::process_argument can handle obsoleted arguments.

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/949/files
  - new: https://git.openjdk.java.net/jdk/pull/949/files/ae686179..213a161b

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=949&range=03
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=949&range=02-03

  Stats: 13 lines in 2 files changed: 3 ins; 8 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/949.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/949/head:pull/949

PR: https://git.openjdk.java.net/jdk/pull/949