This commit also contains some important fixes:
* Option -wd wasn't working
* Relative layout file paths in session files are resolved as relative
to the session file. On writing, absolute paths are used, so this
change only affects session files build intentionally.
Plus:
* Program version is available in unit tests too
* Fixed a typo in the RBA::Expression documentation
The patch is based on splitting the application class into
two incarnations - one for GUI capability and one without.
GSI binding happens dynamically based on the mode chosen.
We can do so because the application class is the first one
to become active and can decide the mode by itself.
In general, the application class carries too much functionality
and splitting is a task for the future. Right now, the functionality
is inside the base class and the derived classes basically only
configure the base class.
A better design would be to drop the QApplication inheritance in
the RBA::Application class hierarchy and provide access to the
QApplication object through qapp_gui getter.
* Moved tlSystemPaths into lay namespace where it belongs
* Doc updates
* New command line switch -y and -yd for unattended installation
* Download URL's can be relative to salt.mine URL
* KLAYOUT_HOME environment variable to make ~/.klayout configurable
* Better error messages on XML parser on file/stream read errors
(specifically from http/https)
Matthias Koefferlein