Log Message:
Updated cad/klayout to 0.24.7
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 http://www.klayout.de/development.html
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Release date: 2016-05-03

Features:

    - Bugfix: XOR and different database units: With tiling, XOR
    between two layouts with different database units was not
    working correctly.

    - Enhancements: progress bar shown also for "-z" mode
    scripts: Scripts running in KLayout with the "-z" option
    (don't show main window) were not experiencing progress
    reporting before. Now a small modal window is shown during
    long-running operations that indicates the progress and
    provides a Cancel button to abort the operation.

    - Bugfix: Crash on using "Edit/Make cell": This happened
    sometimes if the selected objects contained instances.

    - Bugfix: Invalid behavior of paths with reflecting
    segments: For example a path made of the points (0, 0),
    (0, 1000) and (0, 0) had a reflecting segment which cause
    some computations (for example the bounding box) to return
    invalid results.