LICENSE update from dependencies

[rvagg]

Changes in license-builder.sh and LICENSE resulting from that.

• Update libuv license, they changed it upstream
• Update v8_inspector license, their license file was removed from tree when it was reorganised, pulling from file header now
• Reorder LICENSE file to put v8_inspector along with the runtime components and its build components down with the rest of the build components, this is how it should have been in the first place

[richardlau]

The v8_inspector license file was added to address #7123; Was its removal intended? @eugeneo

[thefourtheye]

This needs a rebase now.

[jasnell]

ping @rvagg

[fhinkel]

There hasn't been any activity here. I'm closing this. Feel free to reopen if I closed this in error.