Merged #2476, URI dialog fixes

close branch #2476 - URI dialog fixed

#2476 Changes to the comment.

#2476 Connectors dialog module added.

#2476 Separate connectors dialogs from connectors module.

#2476 Additional check added if we can import wx.

Allow deleting configuration tree node with no corresponding directory in project tree

Support unicode in LDFLAGS returned by extensions

Fixed typos

#2476 Added uri location editor, getting connectors from list in Beremiz.

Fixed random segfault happening when loading new PLC in runtime, when using Xenonai.

PEP-8 and PyLint

merged Denis change to apply input as we type in CTN configuration forms text fieds

PEP-8 and PyLint

Add safety check to prevent exception when disconnecting while debugging

Removed DebugThread. Take advantage of the fact that buffering is done in runtime. No need to poll for traces more than ten per second, then use simple wxTimer for that. Also removed Debug Lock since now everything happens in wx' mainloop.

Rework of runtime non-real-time threading, and shared object dynamic loading :
- All exposed operations on PLCObject are now serialized through main thread
(@RunInMain). Only one exception : python trace thread calling _GetDebugData
- Re-loading of same shared object is prevented. dlclose/delte/rewrite/dlopen
don't happen in that case. This is a workaround for some xenomai copperplate
bug triggering segfault, inbetween delete and rewrite.
- Trace thread now waits for data, dies if no data, and dies instead of
suspending as before when no data consumed after 3 seconds.
- Disabled threading in Pyro client
- Enforced auxiliary threads starting sequence : Pyro -> [UI] ->
PLCWorker.RunLoop

Stripped forgotten debug code

close branch

#2476 Fix for saving text in URI edit text box. No need to click out of URI edit text box to save edited text.

Fixed Xenomai 3 PLC stop freeze. Now use explicit finish command with pipes. Closing both ends of pipes doesn't abort blocking read anymore.

More canonical test.
There is an exception happening around here in some cases when connection is dropped while waiting for answer. Not sure that this fixes it but this is anyhow better.

PLCObject got more methods serialized through worker : Start, Stop, NewPLC.
This particularly helps with initialization/startup/re-load problems
when targeting Xenomai. It should help in general for runtime robustness,
since those operations aren't meant to be executed concurrently.

Fixed implementation of runtime worker that ensure that PLCObject Load and Unload methods always run main thread.

merged

merged

Intermediate state while implementing runtime worker to ensure that PLCObject Load and Unload methods always run main thread.

Stripped more dead code.

Cleanup of some dead code in PYRO connector.

Added logging in Xenomai init phase.

Apply new RT Pipes API from Xenomai 3

Removed useless try/except in Canfestival.py

#2579 On showing search result, text color of tree item is set to white. We need to change back color to show the result.

PEP-8...

Fixed bug that was creating many frames at starup on Windows

re-merge

Xenomai 3

merged Sergeys changes

fix bug with indelible values in some 'optional' fields in project properties panel

only 'required' fields should be indelible

make the URI model compatible with https

add address validation in Company URL field

remove duplicating code for variables name generate

add fields autocomplete when adding task or instance in resources

values will be copied from previous row, first row fills with the default values

fix search in TextViewer objects, search returns only first entry

side effect of a63bb40

fix import order according to PEP8

fix default time range choice for debug variable panel

only localized versions were affected

enlarge canvas border for debug variable graphic viewer

fix rounding milliseconds from nanoseconds

example:rounding 299999 ns to 300ms, if division result is an
integer, remainder will be lost, and result will be 299.