Pause doesn't work on gdb 7.9.1

[dschaefer]

I've seen gdb 7.9 still floating around. The new Pause handing of sending gdb a SIGINT isn't working properly and seems to be ignored. Or it recently started working properly in gdb 7.12.

[jonahgraham]

This now works in general, with the exception of case covered in #99, see #194 for when the work was done, especially pause.spec.ts which only skips the test under these conditions;

cdt-gdb-adapter/src/integration-tests/pause.spec.ts

Lines 33 to 36 in c8015bc

	if (os.platform() === 'win32' && (!isRemoteTest || !gdbAsync)) {
	// win32 host can only pause remote + mi-async targets
	this.skip();
	}