promote
TS-1522 improve RT on Cluster purge miss

backport of TS-1522/f0a98cdc7b950e1ecefde94694de5dfd800248aa
test/review: zwoop, zym, jpeach
backport: igalic
clone jiras
Log.cc: Acquire flush_mutex before using it in ink_cond_wait, or we risk unknown behavior.

On FreeBSD/OpenBSD, ink_cond_wait requires the mutex to be locked prior to being callled,
or it will fail with EPERM and cause an infinite loop with no waiting time (i.e. 100% cpu).
This should in theory also apply to Linux, at least according to documentation, so adding an
acquisition of the mutex before the wait should apply to all OSes. This also, in part, solves
issues 1 through 3 described in TS-993.
[TS-1523] Fix abnormally high CPU usage on FreeBSD/OpenBSD while idle.

Trunk: 8665bbb1e5f34e6de5d709b0314a8fcb1eefec8d
test/review: humbedooh, igalic, zwoop
backport: igalic
TS-1524: fix signed/unsigned compilation issues in Vec

review/test: igalic, zwoop, jpeach
backport: igalic
fix jiras in CHANGES
Propose TS-1524
Merge branch '3.2.x' of https://git-wip-us.apache.org/repos/asf/trafficserver into 3.2.x
comment
comment, potentially vote
Fix TS-1526 backport proposal
+1 on backporting TS-1526
promote, clone jira
TS-1536: SNI support breaks IP-based lookup

The OpenSSL SNI callback will revert to the default context if the
name-based lookup fails even if we already did a successful
address-based context lookup. In this case, we clobber the address-based
context with a default context.

review/test: jpeach, igalic, oschaaf
backport: igalic
backport already done.
Added proposal for range acceleration fix.
voted. You should too.
Added vote on backport
update STATUS with link to jira and a "patch" for the "fix"