* libgweather/weather.c (temperature_string): Use the degree sign
	followed by "C" or "F" rather than using the combined "degrees C"
	and "degrees F" glyphs, which aren't available in some fonts, and
	look bad in others. #526437

	* libgweather/test_metar.c (main): tweak this a little to test
	that change

svn path=/trunk/; revision=508