ninja/mac: Insert a few synthesized Info.plist entries.

ninja/mac: Insert a few synthesized Info.plist entries.

Namely, insert BuildMachineOSBuild, DTSDKName, DTSDKBuild, DTXcode, DTXcodeBuild

The values for the synthesized keys are collected at gyp time. The logic for
this is in XcodeEmulation, which makes it add support for this to the make
generator too if someone feels motivated.

The `mac_tool copy-info-plist` command grows support for an arbitrary number
of [key value] arguments, and these values blindly overwrite potential
existing entries from the plist file (this matches Xcode).

BUG=280718
R=scottmg@chromium.org

Committed: https://code.google.com/p/gyp/source/detail?r=1734

[Nico, 2013-09-17 22:03:49]

Several "neat" python tricks in this cl!

https://codereview.chromium.org/23781011/diff/3001/pylib/gyp/xcode_emulation.py
File pylib/gyp/xcode_emulation.py (left):

https://codereview.chromium.org/23781011/diff/3001/pylib/gyp/xcode_emulation....
pylib/gyp/xcode_emulation.py:259: sdk_root = self.GetPerTargetSetting('SDKROOT',
default='macosx')
Turns out the correct default is just '' apparently

https://codereview.chromium.org/23781011/diff/3001/test/mac/gyptest-app.py
File test/mac/gyptest-app.py (right):

https://codereview.chromium.org/23781011/diff/3001/test/mac/gyptest-app.py#ne...
test/mac/gyptest-app.py:60: xcode = xcode.split()[-1].replace('.', '').zfill(4)
It might seem silly to have the same test here as in xcode_emulation, but this
checks that the code matches xcode's behavior too.

[scottmg, 2013-09-17 22:27:44]

"neat" indeed

lgtm

https://codereview.chromium.org/23781011/diff/3001/test/mac/gyptest-app.py
File test/mac/gyptest-app.py (right):

https://codereview.chromium.org/23781011/diff/3001/test/mac/gyptest-app.py#ne...
test/mac/gyptest-app.py:60: xcode = xcode.split()[-1].replace('.', '').zfill(4)
On 2013/09/17 22:03:49, Nico wrote:
> It might seem silly to have the same test here as in xcode_emulation, but this
> checks that the code matches xcode's behavior too.

Oh, I thought maybe that was a first
https://code.google.com/p/chromium/codesearch#search/&q=zfill%20file:.py%20-t....
Very useful batteries included!

[Nico, 2013-09-17 23:41:52]

Thanks! (The trybots were less kind, so I had to tweak this slightly.)

[Nico, 2013-09-17 23:43:31]

Committed patchset #8 manually as r1734 (presubmit successful).