RFR: 8273218: G1: Rename g1EvacuationInfo to g1EvacInfo [v2]

[Hamlin Li]

> This is a minor cleanup to rename g1EvacuationInfo to g1EvacInfo, as other similar files are named as EvacXxx.

Hamlin Li has updated the pull request incrementally with one additional commit since the last revision:

  Fix include order.

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/5325/files
  - new: https://git.openjdk.java.net/jdk/pull/5325/files/75a2cfeb..6989e6b2

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=5325&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=5325&range=00-01

  Stats: 4 lines in 2 files changed: 2 ins; 2 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5325.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5325/head:pull/5325

PR: https://git.openjdk.java.net/jdk/pull/5325