Preparing v4.x for LTS

[jasnell]

Ok, in preparation for transitioning v4.x to LTS and cutting v4.2, there are a number of commits that still need to be picked and landed in the v4.x branch. This is the short list to get things started. I'll be working on cherry picking these in.

• async_wrap: correctly pass parent to init callback #3216 (commit aeee956)
• doc: add example for tls session resumption #3147 (commit 07a8419)
• build: add --with-arm-fpu option #3228 (commit 17665af)
• test: remove deprecated error logging #3079 (commit 099cfbc)
• test: TapReporter fixes #2647 (commit 10924ce)
• doc: update AUTHORS list #3211 (commit 0116da1)
• test: linting for buffer-free-callback test #3230 (commit 6f63a4a)
• standardizes references to 'userland' issue #3189 #3192 (commit f5a3f44)
• tools: remove leftover license boilerplate #3225 (commit 66c9c61)
• Fix spelling: b.writeUint16LE(0x90ab, 0) to b.writeUInt16LE(0x90ab, 0) #3226 (commit 20b68e5)
• http: cork/uncork before flushing pipelined res #3172 (commit 184f09d)
• buffer: FreeCallback should be tied to ArrayBuffer #3198 (commit d1f2404
• test: eslint rule making common.js mandatory #3157 (commits 3de353b, c78091d)
• tools: apply linting to custom rules code #3195 (commit dbce29a)
• Native buf checks #3080 (commits 05d424c, 8a685e7)
• util: fix for inspecting promises #3221 (commit a1bda1b)
• tools: remove unused gflags module #3220 (commit 87d2615)
• build: Intl: avoid 'duplicate main()' on ICU 56 #3066 (commit aa97ae7)
• doc: fix README.md link to joyent/node intl wiki #3067 (commit d25e34b)
• test: speed up stringbytes-external test #3005 (commit 7d66749)
• test: use normalize() for unicode paths #3007 (commit 81e98e9)
• lib: remove redundant code from timers.js #3143 (commit 070aac4)
• util: correctly inspect Map/Set Iterators #3119 (commits 8853388, 089d688)
• src: fix --abort-on-uncaught-exception #3036 (commits 77a10ed, 49dec1a)
• lib,test: Use long paths when loading native addons #2965 (commit 8593b3e)
• test: remove arguments.callee usage #3167 (
  commit 342c3a1)
• add CLI option to syntax check script #2411 (commit 2e6ece4)
• fs.watch error message includes filename #2748 (commit 87e820e)
• src: add process.versions.icu #3102 (commit 30b8bb0)

[jasnell]

Ok, everything here cherry picked over to v4.x. Closing. Next step will be to begin preparing the release proposal for v4.2.0