Set Column Values Improvements in 9.2

ORG-10636

1. Column short name restriction for F(x) formula to allow easier syntax (A for Col(A)) ORG-9939
   1. Better support for user to locate a function and use it in Column Value dialog
   2. Support Find Function dialog in Set Column Value dialog ORG-6093
   3. Smart Hint to show brief description for each function in F(x) menu ORG-6077 
      Note such mechanism will add for all dialog with F(X) menu like:
      1. Set Column Values (Set Matrix Values),

      2. NLFit (Surface Fit, Matrix Fit, Implicit Fit etc.)

      3. Worksheet Query

      4. New Function Plot

      5. Plot Details

   4. Help entry to go to help page to get details on all the functions in F(x) menuORG-10644
2. More Function Support in Set Column Value dialog 
   1. mod2() and rmod2()  (negative values returned positive dividends) ORG-10579
   2. Value() and Lookup() ORG-8781
   3. isText(x) ORG-10393
3. Move Variables and Constants to the top position of the Variables menu ORG-10257
4. Change Insert to Add in Variables menu for proper indication. ORG-10663