release: ninja v1.6.0

[Nico Weber]

I've tagged a new release of Ninja, version v1.6.0

== Release notes

* rules are now scoped to the subninja they're in. See thread

  "RFC: allow scoping rules via subninja"

  (https://groups.google.com/forum/#!topic/ninja-build/q8esdaNErjo)

  for discussion. (#921)

* dupe edges with multiple outputs now uses first edge

  instead of last (#867)

  + can make this warning optionally an error (-w dupbuild=err),

    which will hopefully become the default one day

    (this release is step 1 of #931)

* pools actually work now (#959)

* no longer print "Recompacting..." when recompacting –

  it's very fast in practice anyway

* generators can now run more often than twice if needed (#908)

* unexpected output names now cause a rebuild instead of

   a hard error (#417)

* POSIX-specific changes

  + child processes get detached from terminal (#909)

  + check for SIGINT after ppoll/pselect -> faster Ctrl-C (#893)

  + add an explicit SIGTERM signal handler (#743)

* Windows-specific changes

  + `-t graph` now produces working dot files on Windows

    when files contain backslashes

  + ninja now uses the full width in cmd.exe

    (it was one column short previously)

  + Ctrl-s (or pause key) in cmd.exe now pauses ninja

  + ninja now builds with MSVS2015

  + run more than 34 child processes if there are

    more than 32 cores. (#958)

* Ran ninja under afl-fuzz and fixed all crashes and bugs it found

  (see new afl-fuzz section in HACKING)

  + fix crashes on cyclic graphs with multiple outputs (#875, #867)

  + failing stat() now aborts build (#830, #904)

  + cyclic rule bindings no longer crash (#902)

  + dependency cycles with multiple outputs no longer get

    ninja into a stuck state (#934)

* Tweaks to configure.py

  (only relevant if you compile ninja itself)

  + configure.py now works with Python 3

  + configure.py now has a --verbose mode

  + configure.py now passes -fdiagnostics-color, so ninja's build

    is now colored with both new enough clangs (3.3+)

    and gccs (4.9+)

* Improvements to zsh completion to work better on OS X

* Documentation updates

+ the target^ syntax is now documented

+ the rule scoping change mentioned above is documented

This release brought to you by:

$ git shortlog -s --no-merges v1.5.3..v1.6.0

     1  Andrey Malets

     1  Ben Boeckel

     1  Beren Minor

     1  Brad King

     1  Colin Cross

     1  Fanael Linithien

     1  Fraser Cormack

     2  Jason Haslam

     1  Julien Tinnes

     2  Mohamed Bamakhrama

    45  Nico Weber

     2  Nicolas Despres

     1  Oliver Vinn

     1  Pierre Schweitzer

     1  Pino Toscano

     1  Rui Ueyama

     1  Ryan Gonzalez

     4  Scott Graham

     1  Spencer Judge

     1  Taiju Tsuiki

     1  Thiago Farina

     1  kwesolowski

     1  tzik

== Getting this release

To build this release, clone the repository as follows:

  git clone git://github.com/martine/ninja.git

  cd ninja

  git checkout v1.6.0

or grab a tarball from https://github.com/martine/ninja/releases .

Once you have the code, run `./configure.py --bootstrap` to build and then

./ninja --version will print the version number.

https://github.com/martine/ninja/releases also has precompiled

binaries for Linux (64bit), Mac OS X (10.6+, 64bit), and Windows.