Make logging on Windows more readable
Make logging on Windows more readable

When using 'print' all stdout lines come after all output produced by all
subprocess calls, while when using sys.stdout directly, they are interleaved
with output from such calls.

R=tandrii@chromium.org
BUG=498256

Review URL: https://codereview.chromium.org/1348203002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@296710 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build