Workaround: change timestamp of 0, to 1, so that Jam does not consider

file as missing. This is needed because /cygdrive on cygwin has the
zero timestamp.

* new/fileunix.c
  (file_time): The above change.


[SVN r18256]

tools/build

@@ -1 +1 @@
-Subproject commit a72ae448b95907c58d35d6e498df9a9789afc1d4
+Subproject commit 784c48029b64a2f6d4958d9ad10f554badd787db