Patch from snaury@narod.ru to fix "a bug in file `filent.c' in function `file_archscan', which causes long .o files in archives invisible to jam, and thus jam always recompiles such .o files, when using, for instance, mingw".

[SVN r28703]

tools/build

@@ -1 +1 @@
-Subproject commit ecf54ec2ed794576c885e9bc4f372b562c105409
+Subproject commit 9fc5e08b577ce5c50c7d1eb1a888656ca861a19b