Added script 'packtests' to the project

The script 'packtests' creates the 'tar.gz' to deploy the test suite
for Lua.

testes/packtests

@@ -0,0 +1,52 @@
+NAME="lua-5.4.0-alpha-tests"
+
+ln -s . $NAME
+ln -s .. ltests
+
+tar --create --gzip --no-recursion --file=$NAME.tar.gz  \
+$NAME/all.lua  \
+$NAME/api.lua  \
+$NAME/attrib.lua  \
+$NAME/big.lua  \
+$NAME/bitwise.lua  \
+$NAME/bwcoercion.lua  \
+$NAME/calls.lua  \
+$NAME/closure.lua  \
+$NAME/code.lua  \
+$NAME/constructs.lua  \
+$NAME/coroutine.lua  \
+$NAME/cstack.lua  \
+$NAME/db.lua  \
+$NAME/errors.lua  \
+$NAME/events.lua  \
+$NAME/files.lua  \
+$NAME/gc.lua  \
+$NAME/gengc.lua  \
+$NAME/goto.lua  \
+$NAME/heavy.lua  \
+$NAME/literals.lua  \
+$NAME/locals.lua  \
+$NAME/main.lua  \
+$NAME/math.lua  \
+$NAME/nextvar.lua  \
+$NAME/pm.lua  \
+$NAME/sort.lua  \
+$NAME/strings.lua  \
+$NAME/tpack.lua  \
+$NAME/utf8.lua  \
+$NAME/vararg.lua  \
+$NAME/verybig.lua  \
+$NAME/libs/makefile  \
+$NAME/libs/P1  \
+$NAME/libs/lib1.c  \
+$NAME/libs/lib11.c  \
+$NAME/libs/lib2.c \
+$NAME/libs/lib21.c  \
+$NAME/libs/lib22.c  \
+$NAME/ltests/ltests.h \
+$NAME/ltests/ltests.c
+
+\rm -I $NAME
+\rm -I ltests
+
+