wined3d: Add traces to IWineD3DDeviceImpl_AcquireFocusWindow() / IWineD3DDeviceImpl_ReleaseFocusWindow().

This makes the tests run faster because native only creates restore points
for installers with a basic UI level and higher.

On recent versions of msi this prevents the creation of a system restore
point, which can take a very long time.

Fixes an installer that stores string references as 2 byte integers and
grows the number of strings beyond the limit of 64k during installation.

winealsa.drv: Rewrite channel counting for additional readability and circumvention of a couple of crashes.

dbghelp: Compute ELF load address using the link_map ld's address (and get correct relocation computation).

dbghelp: When enumerating loaded modules from r_debug structure, pass the address of the dynamic section as well.