Release v.3.3.2
Merge branch 'master' into 3.3.x
* master: (64 commits)
Updated STATUS with v3.3.2 release.
Add some new generated output files from the RAT checks.
TS-621 Allow caching of empty docs (currently only if a header Content-Length: 0 is in the response). New config option is named proxy.config.http.cache.allow_empty_doc, and is disabled by default.
TS-1778: Remove vestigal extensions.config support
filename_to_string doesn't need to strdup
Fix ubuntu vagrant image URL
TS-1806: bogus buffer sizing in CfgContextUtils.cc
Remove obsolete mgr.cnf config file
TS-1805: fix uninitialized result_type in NodeStatEval()
TS-1805: fix conversion when pass value to statVarSet()
Drop in libloader code.
Fix vagrant VM addressing
Turn the vagrant file back into actual ruby
streamline vagrant network assignments
TS-1760: clean up and fix --enable-linux-native-aio
Clean up --enable-luajit help string
Clean up --enable-reclaimable-freelist help string
TS-1067 Fix the code around the proxy.config.udp.theads option
TS-1760: Option to use Linux native AIO
Teach vagrant that omnios is solaris
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