Use Heap[Alloc|Free] instead of malloc|free.

Added a new server call as PostQuitMessage should set a flag in the
message queue to return the WM_QUIT message when there are no other
pending messages, rather than posting a message to the thread queue as
it does at the moment.

- Supports now all WinXP allowed combinations of input variants.
- VT_RESERVED on input variants is handled now.
- Removed complicated VT_DATE comparision; that's not how Windows does it.
- Improved documentation.

Initialise hr and psd->str.uType before the call to
IShellFolder_GetDisplayNameOf so that whatever it returns is
preserved.

instance leak.

ITypeInfo::Invoke.

arguments in ITypeInfo::Invoke.

Simplify missing argument handling by pre-allocating an array of the
maximum number of missing arguments there could be.

Increase buffer size to 12 for getting and setting integer parameters
from/to the registry.

Use HeapAlloc/HeapFree instead of malloc/free.

Remove extern from some function prototypes.

Ensure that pidls passed to SHNotify are absolute SetNameOf should
fail on absolute path names.
Some tests to show this.

Don't leave some of the fields of the TLBFuncDesc structure
uninitialised in CreateDispTypeInfo.