RFR: 8267833: Improve G1CardSetInlinePtr::add() [v2]

[Ivan Walulya]

> Hi all,
> 
> Please review this cleanup change to reduce the number of comparisons made when adding entries to an inline pointer cardset container. We allow the find to restart from a previously known index.
> 
> Testing: Tier 1-3

Ivan Walulya has updated the pull request incrementally with one additional commit since the last revision:

  Kim review

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

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/5067/files
  - new: https://git.openjdk.java.net/jdk/pull/5067/files/e271088a..abf1e63b

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=5067&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=5067&range=00-01

  Stats: 6 lines in 2 files changed: 0 ins; 0 del; 6 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5067.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5067/head:pull/5067

PR: https://git.openjdk.java.net/jdk/pull/5067