test-tool/build: link against libiscsipriv.la

libiscsipriv.la exposes all symbols, so allows tests to perform low
level PDU manipulation, etc. without duplicating code.
As a trade-off, this results in a larger iscsi-test-cu, with libiscsi.so
linking removed.

Link: sahlberg#297
Signed-off-by: David Disseldorp <ddiss@suse.de>

test-tool/Makefile.am

@@ -2,7 +2,7 @@ AM_CPPFLAGS=-I. -I${srcdir}/../include \
 	"-D_U_=__attribute__((unused)) " \
 	"-D_R_(A,B)=__attribute__((format(printf,A,B)))"
 AM_CFLAGS=$(WARN_CFLAGS)
-LDADD = ../lib/libiscsi.la
+LDADD = ../lib/libiscsipriv.la
 
 EXTRA_DIST = README