2004-12-25 Max Bowsher <maxb@ukf.net>

2004-12-25  Max Bowsher  <maxb@ukf.net>

	The Big Cleanup: Phase "win32"

	* win32.h: Major overhaul. Document why we use _WIN32_IE. Move out
	fragment dealing with alloca() to the single file in which it is used.
	Remove fragment dealing with _MAX_PATH, and convert all uses of it
	elsewhere to MAX_PATH. Remove random include of <stdarg.h>. Remove
	NOCOMATTRIBUTE, as setup contains no code which it affects. Remove
	includes of <wininet.h> and <windowsx.h> - see later in this log.
	(IsWindowsNT): New inline function, a much simpler implementation of
	Win32::OS().

	* win32.cc: Delete.

	* Makefile.am (setup_SOURCES): Remove "win32.cc".

	* AntiVirus.cc (detect), PickPackageLine.cc (PickPackageLine::paint),
	* install.c (Installer::installOneSource):
	Use IsWindowsNT(), not Win32::OS().
	* main.cc (main): Use IsWindowsNT(), not locally defined iswinnt.

	* PickView.cc (PickView::WindowProc), netio.cc (auth_proc),
	* proppage.cc (PropertyPage::DialogProc):
	Avoid using obfuscating macros from <windowsx.h>.

	* archive.cc: Include or #define alloca() in the only file in which
	it is used.

	* nio-ie5.h: Include <wininet.h> here, where it is actually needed,
	rather than in "win32.h" which is included almost everywhere.

	* archive_tar.cc, archive_tar.h, cygpackage.cc, cygpackage.h,
	* desktop.cc, find.cc, install.cc, main.cc, mklink2.c, mount.cc,
	* script.cc: Use MAX_PATH, not _MAX_PATH.