adding filesystem specific attribute datastructures and incrementing archive version format
fixing typo in doxygen documentation
Adding support for FSA to inode class

added a set of methods to carry FSA specific information (not yet used anywhere)
aaded two new marks for escape class (not yet used)
fixed typo error
changing type of inode::atime from infinint * to infinint
changing type of inode::last_mod from infinint * to infinit
ea_size changed from infinint to infinint *
changing inode::fsa_size from infinint to infininit *
avoiding allocating inode::ea_offset when it is not used (inode has no saved EA or no EA at all)
allocating inode::fsa_offset only when necessary (not if inode has no FSA saved or no FSA at all)
update implementation of inode::fsa_set_offset() and inode::ea_set_offset() to take care of non always allocated pointers fsa_offset and ea_offset
avoiding allocating inode::fs_dev when it is not used
adding support for FSA to inode::inherited_dump()
fixing bug that let restoration of plain to report failure even when the operation was successful
separating fsa_familly and fsa_nature from other FSA internal stuff to allow exposing only these type to API
added fsa_familly scope to archive options for archive creation, restoration and merging
propagating fsa_scope information from the API down to the filter routines
adding FSA support to filesystem_backup and filesystem_hard_link_read
adding FSA support for statistics counters
FSA support for filtre_sauvegarde