rem: return c.toLowerCase(c); 
add: return c.toLowerCase(); 
context: function _toLower(c) {  DEBUG.assert(c.length == 1, "_toLower only operates on single characters");  return c.toLowerCase(c);}
meta: 3248	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/3248/be074c2d0b6533d23abeae5d73093dfecc9fd303/jslib.js/clean/lib/js/jslib.js