Adjust to honor CFLAGS and LDFLAGS
Drop -Wall from the OPTimization flag

Andreas Schulze authored Feb 11, 2017 and Howard Chu committed Apr 12, 2021

For OpenSSL

Ondřej Kuzník authored Apr 08, 2021 and Quanah Gibson-Mount committed Apr 09, 2021

Stopping short of a full rewrite which would be needed to get rid of
static variables, etc.

OpenSSL only

Build in subdir to keep objects separate from source

ITS#9511 - Stop plugin.c from generating an error when running make depend even if slapi is not enabled

Tweak CRACKLIB linking so that it doesn't depend on gmake

Cleanup on example slapd.conf that's shipped to highlight the ability to temporarily modify a running slapd process even when using a slapd.conf file