Minor changes so the last query doesn't get overwritten by currval queries.
Minor changes so the last query doesn't get overwritten by currval queries.

/db_types/cs_phpDB__pgsql.class.php:
	* connect():
		-- slightly better exception message...
	* exec():
		-- ARG CHANGE: NEW ARG: #2 ($setLastQuery=true)
		-- optionally NOT set lastQuery var.
	* get_currval():
		-- pass false as the second argument to exec() so it doesn't get set 
		as the lastQuery.

crazedsanity/cs-webapplibs