(resend2)comctl32:TTM_SETTOOLINFO does not change subclassing

[Aric Stewart]

Prevents crashes when a subclassed window is unsubclassed and then destroyed.

As per information found at:
https://support.microsoft.com/en-us/kb/kbview/154122

Includes fixed tests
---
 dlls/comctl32/tests/tooltips.c | 149 +++++++++++++++++++++++++++++++++++++++++
 dlls/comctl32/tooltips.c       |  24 ++++---
 2 files changed, 162 insertions(+), 11 deletions(-)


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