RFR: 8332257: Shenandoah: Move evacuation methods to implementation file

[Kelvin Nilsen]

On Tue, 14 May 2024 23:54:15 GMT, William Kemper <wkemper at openjdk.org> wrote:

> This refactoring moves a large, complex function out of an include header. This improves build times and facilitates changes in the generational mode branch.

Marked as reviewed by kdnilsen (no project role).

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

PR Review: https://git.openjdk.org/jdk/pull/19240#pullrequestreview-2058279171