ninja windows: fix expansion of some VS macros

pylib/gyp/msvs_emulation.py

Index: pylib/gyp/msvs_emulation.py
diff --git a/pylib/gyp/msvs_emulation.py b/pylib/gyp/msvs_emulation.py
index 3229a661e403c66de5e2c2b1d495c5a29735855f..efb99c12c0ca75729ef29d4524426c763dfc4c45 100644
--- a/pylib/gyp/msvs_emulation.py
+++ b/pylib/gyp/msvs_emulation.py
@@ -308,9 +308,9 @@ class MsvsSettings(object):
     ldflags.extend(self._GetAdditionalLibraryDirectories(
         'VCLinkerTool', config, gyp_to_build_path))
     ld('DelayLoadDLLs', prefix='/DELAYLOAD:')
-    out = self._Setting(('VCLinkerTool', 'OutputFile'), config, prefix='/OUT:')
+    out = self._Setting(('VCLinkerTool', 'OutputFile'), config)
     if out:
-      ldflags.append(self.ConvertVSMacros(out))
+      ldflags.append('/OUT:' + gyp_to_build_path(self.ConvertVSMacros(out)))
     ld('AdditionalOptions', prefix='')
     ld('SubSystem', map={'1': 'CONSOLE', '2': 'WINDOWS'}, prefix='/SUBSYSTEM:')
     ld('LinkIncremental', map={'1': ':NO', '2': ''}, prefix='/INCREMENTAL')
@@ -411,7 +411,7 @@ class MsvsSettings(object):
     proxy = midl('ProxyFileName', default='${root}_p.c')
     # Note that .tlb is not included in the outputs as it is not always
     # generated depending on the content of the input idl file.
-    outdir = midl('OutputDirectory')
+    outdir = midl('OutputDirectory', '')
     output = [header, dlldata, iid, proxy]
     variables = [('tlb', tlb),
                  ('h', header),
@@ -433,7 +433,7 @@ def GetVSVersion(generator_flags):
 def _GetBinaryPath(generator_flags, tool):
   vs = GetVSVersion(generator_flags)
   return ('"' +
-          os.path.normpath(os.path.join(vs.Path(), "VC/bin", tool)) +
+          os.path.normpath(os.path.join(vs.Path(), "VC/bin", tool)).lower() +
           '"')
 
 def GetCLPath(generator_flags):