Fix PDO_DBLIB bugs: #64338, #64808, #63638

Synchronize with master
FIX BUG #55647, #60512, #60512, #61900, #64338, #64808, #63638

Return an error on passwords longer than 30 chars instead of segfault.
Set error and message handlers properly.
Do not segfault in out of bound colnums in getColumnMeta()
Fix DBSETOPT to use a blank string instead of NULL to stop FreeTDS complaints.
Use DBSETLDBNAME for compatibillity with SQL Azure.
news for dblib fixes
Merge branch 'PHP-5.4' into PHP-5.5

* PHP-5.4:
  news for dblib fixes
  Fix PDO_DBLIB bugs: #64338, #64808, #63638

Conflicts:
	ext/pdo_dblib/dblib_driver.c
	ext/pdo_dblib/dblib_stmt.c
Merge branch 'PHP-5.5'

* PHP-5.5:
  news for dblib fixes
  FIX BUG #55647, #60512, #60512, #61900, #64338, #64808, #63638
  Fix PDO_DBLIB bugs: #64338, #64808, #63638

Conflicts:
	ext/pdo_dblib/dblib_driver.c
	ext/pdo_dblib/dblib_stmt.c