[ns] Install in Irix

[Xiangjing Chen <chenxj@cs.purdue.edu>]

Hi,
	I use ns-allinone-2.1b7 package to install in SGI Irix64-6.5. But
the install stops when it compiles tk. Error reports like:

ld32: FATAL 12: Expecting n32 objects: /p/X11R6/lib/libX11.a(QuTree.o) is
o32.
*** Error code 4 (bu21)

	So how to fix it? Thanks...

Xiangjing Chen