apr: Merge r1889604, r1807975 from trunk:

• random/unix/sha2.c (aprSHA256_Final, aprSHA256_End): Fix parameter buffer lengths to match declaration, avoiding GCC 11 warning. (no functional change)

Bounds-check human-readable date fields (credit: Stefan Sperling)

Submitted by: jorton, niq
Reviewed by: jorton

git-svn-id: https://svn.apache.org/repos/asf/apr/apr/branches/1.7.x@1891198 13f79535-47bb-0310-9956-ffa450edef68
(cherry picked from commit fc1b69d0311e50ed05c00c46ad7dd5d560e57cb6)