Increase the limit for the number of lines in less.

As reported in http://openelec.tv/forum/90-miscellaneous/74189 the current limit for the number of lines in less is 16384. The kodi.log file can quickly grow to have more lines than this, which means skipping to the end of the file with G becomes impossible.

This increases the line limit to 9999999 which is the default value.