- add support for external store providers
- rewrite registry stores as a provider
- fix a memory leak

Don't assign type to variant until we're sure we are assigning a
value.

is passed.

Implement a stub interface that CreateTextServices returns.

command to execute from is not found in the registry.
Pass already found executable name to dde_connect.

attributes, instead of array indices (reported by Eric Kohl).

Write the offset and the absolute address for referenced types.
Write the current offset out when writing a pointer type.

Make the writing of conformant structures take advantage of the new
type format string offset handling.

expression instead of the size_is expression.

Change the functions to take the current type offset and return the
start of the type written.

(based on a patch by Eric Kohl).

Make a copy of type_offset so that it only gets incremented once per
function, instead of twice.

UNIXFS_get_unix_path.

Accept MTCOMP as an alias for MTCOMPRESSION on those systems, having
the former, but not the latter.
Only enable operations supported by the host OS in
TAPE_CreatePartition() and TAPE_Prepare().

- Isotropic mapping mode: Adjust the viewport extension in
  SetWindowExtEx, handle negative extents.
- Support the isotropic mapping mode in the enhanced metafile driver.
- New tests.

which is useful for debugging.

writing functions.