Recognize MSYS(MINGW) as Windows for toolchain get (#7358)
Recognize MSYS(MINGW) as Windows for toolchain get (#7358)

Add the ID string reported by MSYS's latest tools under Windows with
the string "MINGW..." as "Windows" for toolchain selection in get.py
esp8266/Arduino,sticilface/Arduino,esp8266/Arduino,sticilface/Arduino,sticilface/Arduino,esp8266/Arduino,esp8266/Arduino,esp8266/Arduino,sticilface/Arduino,sticilface/Arduino