* LDAP browser perspective should be the 1st page if not specified when connecting to an LDAP server
* don't use scale on characters in GdaBrowser's formgrid's grid part, but use scaling rendering like for the form
* correct GdaHolder but which make the browser's data manager crash

* GdaDataComparator::diff-computed

* a new GValue (with its specific type) to represent pseudo values such as "CURRENT_TIME", "CURRENT_DATE" and timestamp and maybe others
* _gda_tree_node_add_children(): last argument could steal the list instead of making a copy.
