It is no longer used now that test_fpu_setup() uses create_device().

For the most part these were already sorted, but a few exceptions appear to
have crept in.

These have been unused for a while now.

"is_complex_root" is somewhat misleading, given that it is TRUE for surfaces with no attached surfaces.

Thereby removing the last user of get_info_log_line().

Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>

The wine testbot runs tests with C:\Users\Public\Documents as the
working directory. Itemdlg tests create test files in the working
directory and then try to select them for opening in an IFileOpenDialog.
The dialog has its SetFolder method called to point it to the current
working directory before showing the dialog, in order for the test code
to find the test files it had created there just before opening the
dialog.

On Windows, this failed because calling the dialog's SetFolder method
with C:\Users\Public\Documents doesn't work as expected. The dialog
points to the C:\Users\[CURRENT_USER]\Documents directory instead.
Subsequently, the test would be unable to select the test file because
it doesn't exist in that directory. So the dialog wouldn't accept the
file and close itself to finish the test, but show an error message
instead, resulting in a test timeout.

To fix this, set the current working directory to the temporary
directory before calling individual itemdlg test_* functions.

VBscript actually uses the default code page of the user default locale
which may not be the same as CP_THREAD_ACP.
Also for locales that don't have an ANSI code page, such as Hindi, it
falls back to UTF-8.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=54003

Testing shows that this is what native does.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=54663

Also add a few more so the full set of callbacks is tested.

Fixes: 2203a856
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=54657

Signed-off-by: Connor McAdams <cmcadams@codeweavers.com>