* include/functions_html.php: add debug function "f2str" that return as
string any call of function, for example "var_dump".
*include/fgraph.php: into function "grafico_modulo_boolean" re-add alarms,
clean source code and show again the flash graph.
*include/functions_db.php: fix the access to IP client, it used very
deprecate var, that clean of notice php message of error for this cause.
git-svn-id: https://svn.code.sf.net/p/pandora/code/trunk@2229 c3f86ba8-e40f-0410-aaad-9ba5e7f4b01f