#2486 mend profile and gcc 4.6 build

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@21449 b5f69653-2bf5-0310-8201-b0dafb8e1405
#2441 - fix coverage and doxygen

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@21453 b5f69653-2bf5-0310-8201-b0dafb8e1405
#2441 - doh

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@21454 b5f69653-2bf5-0310-8201-b0dafb8e1405