Cash: Move files to new subdirectory cash
Cash: Link cash-library static
Cash: Link lucre in cash library only
Cash: Move header files to new cash subdirectory
Cash: Renaming classes
Cash: Fix opentxs-script include path
Merge pull request #66 from lclc/cash

Digital Cash: Move to own subdir
Moved Timer into util subdir.
Moved tinythread into util subdir.
Moved OTAssert into util subdir.
Moved StringUtils into util subdir.
Moved stacktrace into util subdir.
Moved OTWindowsRegistryTool into util subdir.
Moved win32_utf8conv into util subdir.