* new-features.sgml (ov-new1.7.2): Add native DOS path and UNC path

	* new-features.sgml (ov-new1.7.2): Add native DOS path and UNC path
	change.
	* pathnames.sgml (pathnames-intro): Make the Win32 path text a note
	and xref to new pathnames-win32 section.
	(cygdrive): Add description how the cygdrive mount flags apply to
	UNC paths starting with slashes.
	(pathnames-win32): New section describing native path handling.