Minor stylistic changes - cleaned up import calls, wrapped much text at 80 characters updated comments, typo corrections, removed trailing spaces, etc.

[SVN r42497]

tools/build

@@ -1 +1 @@
-Subproject commit c441b63011ec06e7dcb22f2723508187c45d88d2
+Subproject commit 275b25072d1a67761148638f4397626f66e543c3