Core/Spells: Fix Misdirection (thx to elron) closes #5869, #4343
Core/Spells: Fix Necrotic Touch proc closes #538
Core/Spells: Added sql for misdirection fix (thx dasio)
Core/Spells: one more miss from misdirection fix
Core/DBLayer: Restore pet loading

closes #5878
Core/DBLayer: Typo from prev. commit
DB/Auth: Update auth_database.sql with recent changes
Core/Spells: and another mistake from the misdirection fix >.>
Core/DBLayer: Fix `creature` and `spell_rank` loading
Core/DBLayer: Correct few more wrong read types (No. 1)

DB/World: Some consistency in the ints "length" field (not really a length)

From A to D world tables verified; missing all the others

int(11) -> int32
unsigned int(10) -> uint32
mediumint(8) -> int32
unsigned mediumint(8) -> uint32
smallint(6) -> int16
unsigned smallint(5) -> uint16
tinyint(4) -> int8
unsigned tinyint(3) -> uint8
Core: Remove the MersenneTwiser-library (SFMT is now considered stable enough for full deployment)
Core/Groups: Remove redundant check in WorldSession::HandleLootRoll
Core/DB Layer: - Fix "Thread #1 unlocked a not-locked lock at 0x6D56E90" helgrind error (thanks to Aokromes for logs). Cause was unlocking MySQL connection on shutdown, but concurrent access at this point is not required.

- Remove redundant locking in PingOperation. Since these are delayed to async threads with their own MySQL connection, no concurrent access here either.
- Codestyle cleanup
- Documentation refining
Core/DB Layer: Fix helgrind errors on some concurrent access to resultset auto pointers.
Example:
==8753== Possible data race during read of size 8 at 0x2e803e60 by thread #8
==8753==    at 0xDD0FFC: PreparedResultSet::operator[](unsigned int) const (QueryResult.h:83)
==8753==    by 0x131D82D: WorldSession::HandleCharEnum(Trinity::AutoPtr<PreparedResultSet, ACE_Null_Mutex>) (CharacterHandler.cpp:217)
==8753==    by 0x118F8C3: WorldSession::ProcessQueryCallbacks() (WorldSession.cpp:1087)
{..}
==8753==  Address 0x2e803e60 is 0 bytes inside a block of size 16 alloc'd
==8753==    at 0x4C28B75: operator new(unsigned long) (vg_replace_malloc.c:261)
==8753==    by 0x137D515: __gnu_cxx::new_allocator<Field*>::allocate(unsigned long, void const*) (new_allocator.h:92)
==8753==    by 0x137D378: std::_Vector_base<Field*, std::allocator<Field*> >::_M_allocate(unsigned long) (in /home/aokromes/bin/bin/worldserver)
==8753==    by 0x137CEC6: std::vector<Field*, std::allocator<Field*> >::_M_fill_insert(__gnu_cxx::__normal_iterator<Field**, std::vector<Field*, std::allocator<Field*> > >, unsigned long, Field* const&) (vector.tcc:416)
==8753==    by 0x137CB27: std::vector<Field*, std::allocator<Field*> >::insert(__gnu_cxx::__normal_iterator<Field**, std::vector<Field*, std::allocator<Field*> > >, unsigned long, Field* const&) (stl_vector.h:944)
==8753==    by 0x137C964: std::vector<Field*, std::allocator<Field*> >::resize(unsigned long, Field*) (stl_vector.h:632)
==8753==    by 0x137BFCA: PreparedResultSet::PreparedResultSet(st_mysql_stmt*, st_mysql_res*, unsigned long, unsigned int) (QueryResult.cpp:98)
==8753==    by 0x137A12B: MySQLConnection::Query(PreparedStatement*) (MySQLConnection.cpp:493)
==8753==    by 0x137F663: PreparedStatementTask::Execute() (PreparedStatement.cpp:412)

Have a feeling this is a false positive, though. Nevertheless good to get rid of.
Core/Misc: Make World::m_stopEvent thread-safe. Note that the 'virtual' keyword in C/C++ is pretty useless for multithreading