A little extra documentation

git-svn-id: https://svn.mcs.anl.gov/repos/exm/sfw/c-utils/trunk@13742 dc4e9af1-7f46-4ead-bba6-71afc04862de
Extra function to remove at arbitrary position in heap

git-svn-id: https://svn.mcs.anl.gov/repos/exm/sfw/c-utils/trunk@13743 dc4e9af1-7f46-4ead-bba6-71afc04862de
Initialise node pointers

git-svn-id: https://svn.mcs.anl.gov/repos/exm/sfw/c-utils/trunk@13749 dc4e9af1-7f46-4ead-bba6-71afc04862de
Add tests for new heap function

git-svn-id: https://svn.mcs.anl.gov/repos/exm/sfw/c-utils/trunk@13781 dc4e9af1-7f46-4ead-bba6-71afc04862de
Fix bug in heap_del_entry when deleting last entry in heap.  Add regression test

git-svn-id: https://svn.mcs.anl.gov/repos/exm/sfw/c-utils/trunk@13787 dc4e9af1-7f46-4ead-bba6-71afc04862de