Replace p_ui->get_toolbar_insert_position() with
p_plugin->add_toolbar_item(), which also adds a separator when the
first item is added.
Add 'GeanyPlugin *geany_plugin' plugin symbol, partly to replace
plugin_info (now deprecated), mainly to identify a plugin and hold
private implementation fields for plugin utility functions.
(plugin_info will be removed after the 0.15 release.)
- Code changes:
Add ui_auto_separator_add_ref() to hide separator-like widgets when
their visible group elements are hidden or destroyed.


git-svn-id: https://geany.svn.sourceforge.net/svnroot/geany/trunk@3074 ea778897-0a13-0410-b9d1-a72fbfd435f5