Rename checksummed regen. tasks FooInternal and generated wrappers Foo [LUCENE-9931]

[asfimport]

---

Migrated from LUCENE-9931 by Dawid Weiss (@dweiss), resolved Apr 16 2021
Parent: #10910
Pull requests: #88

[asfimport]

ASF subversion and git services (migrated from JIRA)

Commit beafd11 in lucene's branch refs/heads/main from Dawid Weiss
https://gitbox.apache.org/repos/asf?p=lucene.git;h=beafd11

LUCENE-9931: Rename checksummed regen. tasks FooInternal and generated wrappers Foo (#88)

[asfimport]

Adrien Grand (@jpountz) (migrated from JIRA)

Closing after the 9.0.0 release