Add an impl for From trait

[achanda]

Converts a u8 slice to a Ipv4Addr
More discussion on this here: rust-lang/rfcs#1498 (comment)

[achanda]

r? @alexcrichton

[alexcrichton]

Thanks! I'll tag this with T-libs to make sure we chat about this during triage, and we'll likely discuss it along with the RFC at the same time.

[sfackler]

Could you add an explicit stability tag? It'll make it easier to tell in what release this impl was added.

[achanda]

@sfackler done!

[alexcrichton]

The libs team discussed this yesterday and the decision was to merge!

@bors: r+ ee18d8e

[bors]

⌛ Testing commit ee18d8e with merge ec733a3...

[bors]

⛄ The build was interrupted to prioritize another pull request.

[bors]

⌛ Testing commit ee18d8e with merge 941c514...

[bors]

💔 Test failed - auto-mac-64-opt

[alexcrichton]

@bors: retry

On Thu, Mar 17, 2016 at 11:52 PM, bors notifications@github.com wrote:

[image: 💔] Test failed - auto-mac-64-opt
http://buildbot.rust-lang.org/builders/auto-mac-64-opt/builds/8425

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#32050 (comment)

[bors]

⌛ Testing commit ee18d8e with merge 50f96a7...

[alexcrichton]

@bors: retry force clean

[bors]

⌛ Testing commit ee18d8e with merge 10bdd80...

[bors]

☀️ Test successful - auto-linux-32-nopt-t, auto-linux-32-opt, auto-linux-64-debug-opt, auto-linux-64-nopt-t, auto-linux-64-opt, auto-linux-64-opt-rustbuild, auto-linux-64-x-android-t, auto-linux-64-x-armhf, auto-linux-64-x-armsf, auto-linux-64-x-freebsd, auto-linux-cross-opt, auto-linux-musl-64-opt, auto-mac-32-opt, auto-mac-64-nopt-t, auto-mac-64-opt, auto-mac-ios-opt, auto-win-gnu-32-nopt-t, auto-win-gnu-32-opt, auto-win-gnu-32-opt-rustbuild, auto-win-gnu-64-nopt-t, auto-win-gnu-64-opt, auto-win-msvc-32-opt, auto-win-msvc-64-opt, auto-win-msvc-64-opt-rustbuild