windows: Do not manually load ntdll.dll library

Per Windows Internals, Part 1, Image Loader section, the ntdll.dll library
is always loaded into every process on all NT systems.

So remove code whic

windows: Do not manually load ntdll.dll library

Per Windows Internals, Part 1, Image Loader section, the ntdll.dll library
is always loaded into every process on all NT systems.

So remove code which dynamically loads ntdll.dll library via LoadLibrary()
function and remove also code which changes error reporting mode (used just
for LoadLibrary) as both are not needed.

Also Microsoft C/C++ compilers optimize EXE applications in a way which
expects that the ntdll.dll library is loaded as the first module into the
process before the main EXE module itself.

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windows: Do not show unwanted file-not-found GUI message box

Sometimes SEM_FAILCRITICALERRORS flag (disable critical-error-handler GUI
messages) is not enough for LoadLibrary() and SEM_NOOPENFILEERR

windows: Do not show unwanted file-not-found GUI message box

Sometimes SEM_FAILCRITICALERRORS flag (disable critical-error-handler GUI
messages) is not enough for LoadLibrary() and SEM_NOOPENFILEERRORBOX flag
(disable file-not-found GUI messages) is needed too to prevent showing GUI
messages on LoadLibrary() failures.

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Use C99 named initializers for struct pci_methods

windows: Move common non-I/O port code from i386-io-windows.h to win32-helpers.c

windows: Deduplicate code and move helper functions to new file win32-helpers.c

Function win32_strerror() was duplicated in two different files:
win32-cfgmgr32.c and win32-kldbg.c. Now there is only

windows: Deduplicate code and move helper functions to new file win32-helpers.c

Function win32_strerror() was duplicated in two different files:
win32-cfgmgr32.c and win32-kldbg.c. Now there is only one in
win32-helpers.c.

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Update license comments and added SPDX license identifiers

Previously, the only information about the specific version of GPL
was present in the README and individual source files mentioned only
GPL

Update license comments and added SPDX license identifiers

Previously, the only information about the specific version of GPL
was present in the README and individual source files mentioned only
GPL alone.

Let us update all copyright comments to explicitly say "GPL v2+"
and also include the machine readable SPDX license identifier.

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libpci: Add new windows NT sysdbg implementation

NT SysDbg interface allow access to the PCI config space. Only devices on
the first domain are available and only first 256 bytes of the PCI config
s

libpci: Add new windows NT sysdbg implementation

NT SysDbg interface allow access to the PCI config space. Only devices on
the first domain are available and only first 256 bytes of the PCI config
space can be accessed. Compared to intel-conf1 access, this API is race
free as NT kernel serialize access to PCI I/O ports. This NT SysDbg API is
used by the !pci command of 32-bit WinDbg kernel debugger for displaying
PCI config space. Debug privilege is required to use this NT interface.

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