CharType: don't trim spaces on the left

Trimming policy for reading padded CHAR values should be the same as when search for those same values - "rtrim". Spaces on the left of a String can not be padding, those are the spaces that a user saved deliberately. Currently trimming version of CharType trims both left and right spaces, we need to change that.

Here is the thread where this discussion started: http://markmail.org/message/oiq6xbtcc7wcuq4l