Added doc/author_holke.txt
Implemented the p4est_ghost_is_valid function.
 Improved the p4est_ghost_is_valid function.
Update to p4est_ghost_is_valid.
Edited a comment.
Added a comment.
Improved the p4est_ghost_is_valid function.
 Improved the p4est_ghost_is_valid function.
Fixed bugs in p4est_ghost_is_valid.
Repaired a failed merge.
Fixed an operator precedence error.
README: added a brief description of installing from source.
Extend installation information
Set soname of the p4est library to the current version
Add issue on library versioning
Comment on is_ancestor issue
tsearch: make skipping time_search_1 an option
lnodes: log order and number of global nodes
search: try more aggressive pruning
lnodes: log order and number of global nodes

Conflicts:
	src/p4est_lnodes.c