Log Message:
tex-exam{,-doc}: update to 2.603

 This is version 2.603 of exam.cls.
 It removes an incompatibility with colortbl.sty that
 was created in version 2.6.

 Version 2.6 of the exam documentclass.

 Grading tables and point tables can now have multiple rows or
 multiple columns, there's a new option for two-sided documents
 to have points either always in the outer margin or always in
 the inner margin, and when filling space with lines or dotted
 lines those lines can be in color.

 There are also fixes for several obscure bugs.