os: windows mkMode should set 0111 for dirs

[rsc]

mkMode returns mode 0444 or 0666 for directories on Windows. It should set the 0111 bits
too, for consistency with Unix modes. (If we're going to simulate them the simulation
should be more faithful.)

The current behavior leads to strange behaviors like creating zip files from Windows
with directories mode 0666, which then means that when unzipped on Unix the directories
are unusable.

[alexbrainman]

Comment 1:

http://golang.org/cl/6858079/

Status changed to Started.

[alexbrainman]

Comment 2:

This issue was closed by revision 5b65023.

Status changed to Fixed.

[gopherbot]

Comment 3:

The permissions on my Linux machine of directory src/pkg/os are 0400. os_test.go fails
with the following message:
--- FAIL: TestStatDirModeExec-2 (0.00 seconds)
os_test.go:1107:        Stat ".": mode 020000000700 want 0111
FAIL

[bradfitz]

Comment 4:

Open a new bug and link it here.

[alexbrainman]

Comment 5:

How about this https://golang.org/cl/6851129/ ?
Alex