Else some hash key/value pairs are not initialized at all.
This causes for example:
"Use of uninitialized value" warnings in FIJITestsViewer.pm line 1137

With this change we also set the defaults unconditionally when loaded
by the GUI. This also requires $global_settings_ref to be passed to
_set_defaults() which was using an inexistent $self->{'settings'} so far.

Also, add some missing strict/warning statements and fix resulting
warnings and refine some comments in the headers of files.

 - validate nets and respective drivers like everything else
 - load the netlist earlier (in the user scripts) to make it available while
   loading settings
 - add a FIJI::Netlist parameter to respective FIJI::Settings's functions
 - add a new type 'driver' for FIU elements to distinguish its string
   representation from nets'
 - add new net validation function to FIJI::Netlist
 - use this to make net and FIU validation more generic to simplify FIJISettingsViewer
 - refine and correct handling of the tool phases
 - distinguish fatal errors, missing fields and less important anomalies when
   validating settings depending on the phase etc
 - notify user about validation problems in more detailed messages and tooltips
 - refine FIJI::VHDL to not load settings all the time and receive parameters
   directly instead of via hashes
 - use a global constant ONLY_LOAD in fiji_setup instead of a local variable
 - add a 'show_warning' function to ease opening warning dialogs
 - various other usability/GUI-related improvements
 - allow the deletion of nets

And some other minor refinements

find * -type f \( -name "*.pm" -or -name "*.pl" -or -name "*.tst" -or -name "*.cfg" \) -print0 | parallel -q -0 sed -i -e 's/FAULT_DETECT_/FD_/g;s/RESET_/RST_/g;s/TRIGGER_/TRIG_/g;s/INSTRUMENTATION_/INST_/g;s/IMPLEMENTATION_/IMPL_/g;s/_DURATION/_DUR/g;s/_ACTIVE/_ACT/g;s/_CONFIG/_CFG/g;s/OPTIMIZATION_OFF/OPT_OFF/g;s/s_fiji_trigger_/s_fiji_trig_/g'

Use this to set the available UART ports and default timer values.
The latter gets rid of FIJI::DEFAULT_TIMER_VALUE by replacing it with
FIJI::Settings::default_timer_value().

However, it requires some non-trivial changes, namely the refactoring
of FIJI::Tests. While at it, we got almost rid of the 'ext' field in
Tests. It is lessened to 'TESTPATMAP' containing info to verify tests.

The refactoring also allows for unification of opening of tests files
in the EE GUI. To that end this patch adds _read_tests_file() that
handles creation of the Tests instance and handle user interaction if
need be.

They are not useful in git. If need be they could be implemented by a
fudge/clean filter with git attributes.

Adresses Issue #30

now.
TBD: Test with actual RTL design.
Adresses Issue #30.

email

Added possibility to export tests as VHDL package (for simulation)

Set application name for Gnome
Only allow to select Fault Models actually present in HW in download tool.
Beautify run.

Reapplied Beautify script

Logging to textbox in fiji download GUI
Added demo test configuration file

Added logging to Tk::Text widget

Added functionality to export constraints files from fiji_instrument

Removed FIJI::Settings reference from FIJI::Tests Object

Added port to Makefile so we don't have to edit test config files

Simplified assignment import into Quartus in Demo

Extended test description file format (see fiji_test.cfg)

GUI changed to Tabbed layout, Enable checkboxes, Drop-Down for bit values

 - get rid of backend store in FIJISettingsViewer
 - simplify overall function design and data structures
 - re-validate GUI elements on new data (settings or net lists)
 - warn before overwriting existing file in all cases
 - fix preliminary autocomplete (some remaining pre-existintg bugs in CompleteEntry.p)

Because it produces warnings on some versions of Perl.