CORE-12686
This collection of libraries consist in:
- a down-level `pathcch_static` PathCch library, to be used for programs
that need to run on Windows 7 and below;
- Windows 8+ compatible libraries importing from either kernelbase.dll
(`pathcch_kernelbase`), or from the corresponding APISET
api-ms-win-core-path-l1-1-0.dll (`pathcch`, which is Win8+ PSDK
compatible).
The down-level static library is compiled by reusing the newly-introduced
kernelbase's path.c, instead of using a specific pathcch.c.
Unrelated functions are excluded from compilation by putting them into
`#ifndef STATIC_PATHCCH ..... #endif` blocks.
CORE-12686
Isolate PathCch* functions from Wine implementation in kernelbase
(which are mixed with a ton of unrelated stuff).
These functions are compiled into a pathcch.lib library, similarly
to the one in the official MS PSDK. Excepting that here, their actual
implementation is in the library. This contrasts with the one in the
MS PSDK, which is an import library to an apiset DLL.
The pathcch.h header is an original one, that contains SAL annotations
and descriptive parameter names, based on the MinGW and MS PSDK headers.
Wine's header was not used as it is poor and incomplete.
Co-authored-by: Katayama Hirofumi MZ <katayama.hirofumi.mz@gmail.com>
