libphobos: Add D runtime support code for MinGW (PR99794)
libphobos/ChangeLog:
PR d/99794
* libdruntime/Makefile.am (DRUNTIME_SOURCES_CONFIGURED): Add
config/mingw/msvc.c on DRUNTIME_OS_MINGW.
* libdruntime/Makefile.in: Regenerate.
* libdruntime/config/mingw/msvc.c: New file.
* libdruntime/config/mingw/switchcontext.S (fiber_switchContext): Fix
function definition.
* libdruntime/gcc/deh.d (__gdc_personality_seh0): Fix call to
_GCC_specific_handler.
* libdruntime/gcc/gthread.d (__gthread_once_t): Fix definition.
* libdruntime/gcc/unwind/generic.d (_GCC_specific_handler): Fix
declaration.
* libdruntime/rt/dmain2.d (rt_loadLibrary): Remove function.
(rt_loadLibraryW): Remove function.
(initLibrary): Remove function.
(rt_unloadLibrary): Remove function.