* pinfo.cc (pinfo::init): Define sa_buf as PSECURITY_ATTRIBUTES and

allocate dynamically.
	(pinfo::set_acl): Replace sa_buf by dynamically allocated acl_buf.
	* sec_acl.cc (setacl): Allocate acl dynamically.
	* sec_helper.cc (sec_acl): Add test for alignment of acl when
	DEBUGGING is defined.
	(__sec_user): Same for sa_buf.
	* security.cc (verify_token): Define sd_buf as PSECURITY_DESCRIPTOR
	and allocate dynamically.
	(alloc_sd): Allocate acl dynamically.
	security.h (sec_user_nih): Change first parameter to
	SECURITY_ATTRIBUTES *.
	(sec_user): Ditto.
	* sigproc.cc (wait_sig): Define sa_buf as PSECURITY_ATTRIBUTES and
	allocate dynamically.
	* syscalls.cc (seteuid32): Define dacl_buf as PACL and allocate
	dynamically.
	* uinfo.cc (cygheap_user::init): Define sa_buf as PSECURITY_ATTRIBUTES
	and allocate dynamically.
	* winbase.h (ilockincr): Mark first argument of inline assembly as
	earlyclobber.
	(ilockdecr): Ditto.

winsup/cygwin/sigproc.cc

@@ -998,7 +998,7 @@ static DWORD WINAPI
 wait_sig (VOID *self)
 {
   HANDLE readsig;
-  char sa_buf[1024];
+  PSECURITY_ATTRIBUTES sa_buf = (PSECURITY_ATTRIBUTES) alloca (1024);
   Static bool holding_signals;
 
   /* Initialization */