[PATCH] fix non-ia32 `make rpm'

From: "Zhu, Yi" <yi.zhu@intel.com>

The "make rpm" rule in top Makefile isn't aware of the enviorment ARCH.  For
example, people issue "make ARCH=ia64" to compile the ia64 kernel on i386
platform for cross compilation.  This works pretty well now.  But if one uses
"make rpm ARCH=ia64", it will fail.  Because current rpm rule in Makefile and
mkspec are not aware of ARCH.

Makefile

@@ -878,7 +878,7 @@ rpm:	clean spec
 	$(CONFIG_SHELL) $(srctree)/scripts/mkversion > $(objtree)/.tmp_version;\
 	mv -f $(objtree)/.tmp_version $(objtree)/.version;
 
-	$(RPM) -ta ../$(KERNELPATH).tar.gz
+	$(RPM) --target $(UTS_MACHINE) -ta ../$(KERNELPATH).tar.gz
 	rm ../$(KERNELPATH).tar.gz
 
 # Brief documentation of the typical targets used

scripts/mkspec

@@ -9,7 +9,7 @@
 #	Patched for non-x86 by Opencon (L) 2002 <opencon@rio.skydome.net>
 #
 # That's the voodoo to see if it's a x86.
-ISX86=`arch | grep -ie i.86`
+ISX86=`echo ${ARCH:=\`arch\`} | grep -ie i.86`
 if [ ! -z $ISX86 ]; then
 	PC=1
 else