Addition of L specifier to indicate a 64-bit float constant to prevent

compiler errors indicating floating-point overflow. Thanks to @hb--.

This references issue #1.

util.c

@@ -386,7 +386,7 @@ int sqlite3AtoF(const char *z, double *pResult, int length, u8 enc){
         if( esign<0 ){
           result = 0.0*s;
         }else{
-          result = 1e308*1e308*s;  /* Infinity */
+          result = 1e308L*1e308L*s;  /* Infinity */
         }
       }else{
         /* 1.0e+22 is the largest power of 10 than can be