Update git/hg ignore files
Allow for class allocation/deallocation.
Upon close reset the search_dirs.
Up to strlen and not to sizeof. This is guaranteed to work as
in the worst case we just forced a \0 at the end of the string.
Don't iniaitlize twice the event framework (it is already initialized
the init_tool).
Start with a sane value.
Be symmetric to the opal_init.