Adding object table (#1)

* code for maintaining the object table

* Makefile fix

* Clone git submodules.

* directory -> object_table

* Fix Makefile and remove unnecessary files.

* Fix formatting.

* make code more generic

Makefile

@@ -0,0 +1,24 @@
+CC = gcc
+CFLAGS = -g -Wall --std=c99 -D_XOPEN_SOURCE=500 -D_POSIX_C_SOURCE=200809L
+BUILD = build
+
+CFLAGS += -Wmissing-prototypes
+CFLAGS += -Wstrict-prototypes
+CFLAGS += -Wmissing-declarations
+
+$(BUILD)/db_tests: hiredis test/db_tests.c thirdparty/greatest.h event_loop.c state/redis.c common.c
+	$(CC) -o $@ test/db_tests.c event_loop.c state/redis.c common.c thirdparty/hiredis/libhiredis.a $(CFLAGS) -I. -Ithirdparty
+
+clean:
+	rm -r $(BUILD)/*
+
+redis:
+	cd thirdparty ; bash ./build-redis.sh
+
+hiredis:
+	git submodule update --init --recursive -- "thirdparty/hiredis" ; cd thirdparty/hiredis ; make
+
+test: hiredis redis $(BUILD)/db_tests FORCE
+	./thirdparty/redis-3.2.3/src/redis-server & sleep 1s ; ./build/db_tests
+
+FORCE: