+ * solvable_trivial_installable_map - anwers is a solvable is installable
+ * without any other installs/deinstalls.
+ * The packages considered to be installed are provided via the
+ * installedmap bitmap. A additional "conflictsmap" bitmap providing
+ * information about the conflicts of the installed packages can be
+ * used for extra speed up. Provide a NULL pointer if you do not
+ * have this information.
+ * Both maps can be created with pool_create_state_maps() or
+ * solver_create_state_maps().
+ *