Patch by Kim Holviala sf.net id #2484548.

Patch by Kim Holviala sf.net id #2484548.

		* change the height of execbar and execibar to be the same as other
		bars have by default (6 pixels)
		* treat mixer values as percentages as they're usually 0-100 (switch
		to spaced_print() with pad_percents)
		* change temp_print() from snprintf() to spaced_print()
		* remove decimals from temp_print() as none of the current sources can
		supply values smaller than 1 degree (C or F, doesn't matter)
		* add a space between number and the unit in human_readable()
		* fix number printing in human_readable()
		* network $upspeed and $downspeed now use human_readable()