A little more help for parallel debugging (related to #2595)

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@22839 b5f69653-2bf5-0310-8201-b0dafb8e1405
#2595 Fix test for more than 3 processes (errors mainly caused by tolerance issues).

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@22841 b5f69653-2bf5-0310-8201-b0dafb8e1405
#2595 Fix tests for more than 3 processes.

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@22844 b5f69653-2bf5-0310-8201-b0dafb8e1405
#2595 Fix tests for more than 3 processes - tolerances tweaked after r22844

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@22845 b5f69653-2bf5-0310-8201-b0dafb8e1405
#2595 More tolerances tweaks

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@22847 b5f69653-2bf5-0310-8201-b0dafb8e1405
#2595 This was the original failure to be spotted.  It's a classic race condition.

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@22848 b5f69653-2bf5-0310-8201-b0dafb8e1405
#2565 Now that the test actually tests, get it passing on 3.5

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@22851 b5f69653-2bf5-0310-8201-b0dafb8e1405
#2565 Make test parallel-safe (making an `OutputFileHandler` before petsc setup is dangerous!). Also check that citation file is writable.

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@22852 b5f69653-2bf5-0310-8201-b0dafb8e1405
#2595/#2282  Turn the "no cells on process" from a warning to an error.  This prevents deadlock when a process with no cells attempts to pre-condition, but it requires that we now fix some build=_3 tests.

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@22857 b5f69653-2bf5-0310-8201-b0dafb8e1405
git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@22858 b5f69653-2bf5-0310-8201-b0dafb8e1405
git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@22870 b5f69653-2bf5-0310-8201-b0dafb8e1405
git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@22876 b5f69653-2bf5-0310-8201-b0dafb8e1405
Fix build on OS X Mavericks - patch submitted by Markus Owen (see #2481).

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@22890 b5f69653-2bf5-0310-8201-b0dafb8e1405
#2300 Simple linear acinar balloon model to aid testing

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@22951 b5f69653-2bf5-0310-8201-b0dafb8e1405
#2599 Switch from mpiposix to mpio driver

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@22962 b5f69653-2bf5-0310-8201-b0dafb8e1405
#2558/#1616 - switch back to using just lookup tables on V by default (c.f. r22177).

git-svn-id: https://chaste.cs.ox.ac.uk/svn/chaste/trunk@22984 b5f69653-2bf5-0310-8201-b0dafb8e1405