changed target allarch into allzstd

allzstd contains only zstd-related tests.
allmost = allzstd + zwrapper tests (which require zlib)

programs/Makefile

@@ -67,7 +67,6 @@ else
 endif
 
 ZSTDLIB_FILES := $(sort $(wildcard $(ZSTD_FILES)) $(wildcard $(ZSTDLEGACY_FILES)) $(wildcard $(ZDICT_FILES)))
-ZSTDLIB_OBJ   := $(patsubst %.c,%.o,$(ZSTDLIB_FILES))
 
 # Define *.exe as extension for Windows systems
 ifneq (,$(filter Windows%,$(OS)))