V5.0 Arduino way calculating size does not work on windows

[jantje]

          OK newly created projects work for me, but old ones are not migrated.

Printing size "raw Result" results in:

Printing size:: test51.size
"E:\Sloeber5\arduinoPlugin\packages\arduino\tools\avr-gcc\7.3.0-atmel3.6.1-arduino7/bin/avr-size" -A "E:\WORKSPACE_SLOEBER5\test51\bin\Release/test51.elf"
E:\WORKSPACE_SLOEBER5\test51\bin\Release/test51.elf  :
section                      size      addr

"AVR Alternative" also works, but "Arduino Way" (under Windows) results in:

Printing size:: test51.size
wsl -- "E:\Sloeber5\arduinoPlugin\packages\arduino\tools\avr-gcc\7.3.0-atmel3.6.1-arduino7/bin/avr-size" -A "E:\WORKSPACE_SLOEBER5\test51\bin\Release/test51.elf" | "E:\Sloeber5\arduinoPlugin\tools\awk\awk" -f size.awk
/bin/bash: E:Sloeber5arduinoPluginpackagesarduinotoolsavr-gcc7.3.0-atmel3.6.1-arduino7/bin/avr-size: No such file or directory
/bin/bash: E:Sloeber5arduinoPlugintoolsawkawk: command not found

Originally posted by @ArminJo in #1666 (comment)

[jantje]

this is fixed