semantic change: allow reaching into parent directories in paths

This allows generating build files in a subdirectory of your source tree.
- Change CanonicalizePath to accept this.
- CanonicalizePath no longer has an error condition, so change it to a void
  function.

I profiled the result against Chrome and it might be ~100ms slower, but that
might just be Chrome's size working against me.  In any case I think there
are lower-hanging performance fruit elsewhere.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/util.h b/src/util.h
index c9e06f4..58a0a3a 100644
--- a/src/util.h
+++ b/src/util.h
@@ -31,7 +31,7 @@ void Warning(const char* msg, ...);
 void Error(const char* msg, ...);
 
 /// Canonicalize a path like "foo/../bar.h" into just "bar.h".
-bool CanonicalizePath(string* path, string* err);
+void CanonicalizePath(string* path);
 
 /// Create a directory (mode 0777 on Unix).
 /// Portability abstraction.