set tsxs to use env bash
TS-1474: mark usage() as no_return
TS-1476: avoid passing NULL to strstr()
TS-1476: LogFile::exists() should not accept NULL
Bump version to v3.3.5
TS-1942 Remove username.cache configs, they are obsolete and long gone
Fix configure error message grammar
TS-1475: fix possible divide-by-zero in MultiCache

MultiCache::initialize() default-initializes level2_elements_per_bucket
to 0. Depending on the values of other arguments, this could result
in a divide by zero error.
TS-1948: remove obsolete TSPluginLicenseRequired and plugin.db

The obsolete and unused plugin licensing code was previously removed.
Also remove the plugin.db configuration file since there's no users
of it.
TS-1475: fix memory leak in SDK_API_TSTextLog test

Coverity CID 1022157
TS-1475: ensure that SDK_API_TSMimeHdrParse buffers are released

Coverity CID 1022156
Added a Coverity model file, please add false positive exceptions to this file
TS-1496: Enable per transaction flow control
Fix compilation problem on kfreebsd, this should not affect other architectures
TS-1684 - Added more ProxyAllocators for faster and local memory
allocation.  Have seen a doubling in performance depending on the benchmark.
Details in the ticket.
TS-1820 Remove a few more old NOWARNs
First cut at the clang-format config, this is not done
TS-1684 Add missing ProxyAllocator.cc
TS-1934 Make geoip_acl plugin compile again
Added Ts-1934.