Fix iteration macro in ll
Add inclusion to pull in r_set_cfg
Remove malicious commata from set.h
Remove malicious qualifiers
Add r_set_cfg to avl_destroy
Add r_set_cfg parameter to avl_add
Add r_set_cfg parameter to avl_del
Move avl_find internals into function
Redefine function avl_find
Adapt the interface of avl_del
Merge pull request #106 from neithernut/mod-avl_interface

Mod avl interface
Added testing file for AVL implementation
Added allocation test for avl test
Added test for testing allocation and deleting for AVL
Added test for adding data to the avl tree
Added test for adding and destroying afterwards
Added test for adding multiple elements
Added test for adding multiple and destroying AVL afterwards
Added test for colliding inserts
Added test for finding a single element