Windows support

[desertkun]

• Need Visual Studio 2015 to build, also a ton of SDKs are required, not sure what exactly
• x64 only (for now)
• ninja (required to build) is downloaded automatically
• no greenstack support on Windows
• timeouts are made with timeSetEvent / timeKillEvent
• also some small minor optimizations that do not deserve separate PR

[codecov-io]

Codecov Report

Merging #29 into master will increase coverage by 0.27%. The diff coverage is 97.05%.

@@           Coverage Diff            @@
##           master    #29      +/-   ##
========================================
+ Coverage   80.73%    81%   +0.27%     
========================================
  Files          16     16              
  Lines        1339   1353      +14     
========================================
+ Hits         1081   1096      +15     
+ Misses        258    257       -1

Impacted Files	Coverage Δ
v8py/pyfunction.cpp	100% <ø> (ø)	:arrow_up:
v8py/jsobject.cpp	89.43% <ø> (ø)	:arrow_up:
v8py/greenstack.cpp	40% <ø> (ø)	:arrow_up:
v8py/pyclass.cpp	95.67% <ø> (ø)	:arrow_up:
v8py/script.cpp	90.1% <ø> (ø)	:arrow_up:
v8py/context.cpp	88.1% <ø> (ø)	:arrow_up:
v8py/exception.cpp	93.18% <ø> (ø)	:arrow_up:
v8py/debugger.cpp	10% <ø> (ø)	:arrow_up:
v8py/jsfunction.cpp	96.96% <100%> (+0.41%)	:arrow_up:
v8py/convert.cpp	85% <100%> (+1.12%)	:arrow_up:
... and 1 more

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[desertkun]

The last build went okay, I don’t know why its showing up as failed. Do you know how to retrigger a build?

[tbodt]

It's complaining because the code coverage went down, which is because of the extra if statements added to choose between VLAs and heap allocation on not-windows. It's probably OK to merge, though you could add test cases for longer strings and larger number of arguments.

[desertkun]

It's all set now.

[desertkun]

Bam!