Fixed more corner cases in meridian/parallel labelling. Fixed labelling when rcParams['text.usetex']=True.
Fixed more corner cases in meridian/parallel labelling.
Fixed labelling when rcParams['text.usetex']=True.

svn path=/trunk/toolkits/basemap/; revision=1780

matplotlib/basemap,guziy/basemap,guziy/basemap,matplotlib/basemap