function bOk = li_iscellrowchar(cTestObj)
Returns <bOk> as true if, and only if, <cTestObj> is of type cell, all elements of <cTestObj> are of type char, and all elements of <cTestObj> are row vetors, meaning a matrix of size 1xn where n is greate than zero. The function differs from iscellstr only in one aspect: additionally elements of the cell array must all be row vectors.