Incorrect incompatible architecture warning with multiple architectures values

[per1234]

Using Arduino IDE 1.8.2 Hourly Build 2017/01/25 04:33 with Windows 7 64 bit

When there are multiple architectures values in library.properties the incompatible architecture warning is incorrectly generated.

Steps to reproduce:

1. Install the Arduino Scheduler library (can be done via Library Manager).
2. Open the MultipleBlinks example file included with the Scheduler library
3. Compile for an AVR board. The architecture warning shown is:

WARNING: library Scheduler claims to run on [sam architecture(s) and may be incompatible with your current board which runs on samd] architecture(s).

The correct warning would be something like:

WARNING: library Scheduler claims to run on [sam,samd] architecture(s) and may be incompatible with your current board which runs on [avr] architecture.

[facchinm]

The machine output is ok here, the broken part seems to be the square brackets interpretation
WARNING: library {0} claims to run on {1} architecture(s) and may be incompatible with your current board which runs on {2} architecture(s). ||| [Scheduler [sam samd] [i586]]
In fact the java part misinterprets the closing bracket (part of the variable string) as the full closing bracket.
A workaround could be something like facchinm@019d602 but it's a super dirty hack. @cmaglie should we move the "square to round brackets" routine into FromJavaToGoSyntax function or solve it Java-side?