Fix Table Variable Names After Applying Function

When you apply a function to table variables, Matlab creates a new table with variable names "function_original name". This code fixes that.

When you apply a function to table variables, Matlab creates a new table with variable names "function_original name". This code fixes that. You have to supply the new table the function creates, the original table that contains the variable names, and the name of the function applied as a string. Helps with functions such as groupsummary, varfun etc.