Linux templates

We've got 7 linux templates all doing the same thing, and one more
(s390) coming up. How about putting them all into one?

Any news on why linux_alpha defines CPU=alpha, which
is used in backend/storage/ipc/Makefile:

ifeq ($(CPU),alpha)
ifeq ($(CC), gcc)
CFLAGS+= -fno-inline
endif
ifeq ($(CC), egcs)
CFLAGS+= -fno-inline
endif
endif

(Certainly a compiler bug -- what's the latest on that?)

and in backend/utils/adt/Makefile:

ifeq ($(CPU),alpha)
ifeq ($(CC), gcc)
CFLAGS+= -mieee
endif
ifeq ($(CC), egcs)
CFLAGS+= -mieee
endif
endif

(Reading the documentation on this, it seems that we should perhaps
compile the entire source with -mieee, rather than having certain parts
work more "correctly" than others.)

-- 
Peter Eisentraut                  Sernanders väg 10:115
peter_e@gmx.net                   75262 Uppsala
http://yi.org/peter-e/            Sweden