comctl32: toolbar: Use the width of the current button instead of nButtonWidth to position the icon.

comctl32: toolbar: Add a LayoutToolbar that works like CalcToolbar but doesn't overwrite the button sizes.

comctl32: toolbar: The string should be included in the height of a button-less toolbar only if there is a string in the pool.

Now that we have a critical section, races are no longer possible.

rpcrt4: Set the AI_PASSIVE flag to getaddrinfo in rpcrt4_ip_tcp_open so that the bound-to port is connectable from other machines.

the read and write function for the protseq assume that syscalls will block.

to go into an infinite loop if getaddrinfo returned more than one entry.