Update to Leptonica 1.69

git-svn-id: http://maxmods.googlecode.com/svn/trunk@1576 b77917fb-863c-0410-9a43-030a88dac9d3
Fixed Win32 compile error.

git-svn-id: http://maxmods.googlecode.com/svn/trunk@1577 b77917fb-863c-0410-9a43-030a88dac9d3