Include <ctypes.h> for declaration of tolower() function

git-svn-id: http://svn.osgeo.org/postgis/trunk@12997 b70326c6-7e19-0410-871a-916f4a2858ee
Fix unused variable warning

git-svn-id: http://svn.osgeo.org/postgis/trunk@12998 b70326c6-7e19-0410-871a-916f4a2858ee