Merge latest ninja_syntax.py from upstream.

Merge latest ninja_syntax.py from upstream.

Changes:
* ninja_syntax.py: Fix a bug when passing dict variables to Writer.build()
* Explicitly turn input/output lists into list objects, for Python 3 compat
* add rspfile and rspfile_content to ninja_syntax
* Fix layout width in ninja_syntax.py.

With this, the downstream diff reduces to:

--- ../ninja/misc/ninja_syntax.py       2012-05-01 21:17:37.000000000 -0700
+++ pylib/gyp/ninja_syntax.py   2012-05-01 21:59:13.000000000 -0700
@@ -33,13 +35,16 @@
         self._line('%s = %s' % (key, value), indent)
 
     def rule(self, name, command, description=None, depfile=None,
-             generator=False, restat=False, rspfile=None, rspfile_content=None):
+             generator=False, restat=False, deplist=None, rspfile=None,
+             rspfile_content=None):
         self._line('rule %s' % name)
         self.variable('command', command, indent=1)
         if description:
             self.variable('description', description, indent=1)
         if depfile:
             self.variable('depfile', depfile, indent=1)
+        if deplist:
+            self.variable('deplist', deplist, indent=1)
         if generator:
             self.variable('generator', '1', indent=1)
         if restat:
Committed: https://code.google.com/p/gyp/source/detail?r=1350

[scottmg, 2012-05-02 05:08:37]

lgtm