[I386][USERLAND][LIBC] Add __udivdi3 allowing uint64_t division
[USERLAND][LIBC] Add strtok_r()
[USERLAND][LIBC] Add strcmp()
[I386][USERLAND][LIBC] Fix __udivdi3/__udivmoddi4 compilation with clang
[KERNEL][VFS] Fix fiu_lookup()
[USERLAND][LIBC] Add LOOKUP_RET_* macro definition
[USERLAND][DRV] Add inode_block_data() to Ext2
[USERLAND][DRV] Add lookup implementation for Ext2 driver