Disable building of tests

libunwind tests do not build with uClibc, so we disable them.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

Index: b/Makefile.am
===================================================================
--- a/Makefile.am
+++ b/Makefile.am
@@ -36,7 +36,7 @@
 
 nodist_include_HEADERS = include/libunwind-common.h
 
-SUBDIRS = src tests doc
+SUBDIRS = src doc
 
 noinst_HEADERS = include/dwarf.h include/dwarf_i.h include/dwarf-eh.h	\
 	include/compiler.h include/libunwind_i.h include/mempool.h	\
Index: b/Makefile.in
===================================================================
--- a/Makefile.in
+++ b/Makefile.in
@@ -313,7 +313,7 @@
 	$(am__append_7) $(am__append_8) $(am__append_9) \
 	$(am__append_10)
 nodist_include_HEADERS = include/libunwind-common.h
-SUBDIRS = src tests doc
+SUBDIRS = src doc
 noinst_HEADERS = include/dwarf.h include/dwarf_i.h include/dwarf-eh.h	\
 	include/compiler.h include/libunwind_i.h include/mempool.h	\
 	include/remote.h						\