* intrin.h: Allow inclusion under Cygwin.  Move all declarations
	colliding with POSIX into a single block, guarded by #ifndef __CYGWIN__.
	Add comment to explain why.  Change `long' to `__LONG32' throughout to
	handle LP64 systems.


git-svn-id: https://mingw-w64.svn.sourceforge.net/svnroot/mingw-w64@5724 4407c894-4637-0410-b4f5-ada5f102cad1
	* configure.ac (BASEHEAD_LIST): Add crt/intrin.h.
	* configure: Regenerate.


git-svn-id: https://mingw-w64.svn.sourceforge.net/svnroot/mingw-w64@5725 4407c894-4637-0410-b4f5-ada5f102cad1
	* intrincs/*.c: Change `long' to `__LONG32' throughout to handle
	LP64 systems.


git-svn-id: https://mingw-w64.svn.sourceforge.net/svnroot/mingw-w64@5726 4407c894-4637-0410-b4f5-ada5f102cad1