fix for tests 20 & 21

[Tim Rice]

Here is a patch to early-libtool.at that adds SHELL = @SHELL@
to the 2 Makefile.in files it creates for tests 20 & 21.
Without it on some platforms you will see errors like this in
testsuite.log.
My toplevel Makefile had SHELL = /usr/bin/ksh88
.....
/bin/sh ./libtool --mode=link --tag=CC cc -o hell main.o libhello.la
UX:sh (./libtool): ERROR: Bad substitution
.....

-- 
Tim Rice                                Multitalents    (707) 887-1469
address@hidden

early-libtool.at.patch
Description: early-libtool.at.patch