Add threads.c

Makefile

@@ -1,7 +1,7 @@
 FILES = *.c */*.c
 LIBRARIES = -lpthread
 INCLUDES = -I. -I./parser/ -I./compiler/ -I./vm/ -I./tokenizer/ -I./misc/
-CFLAGS = -std=c99 -g
+CFLAGS = -std=c99 -Wall
 OUTFILE = jack-compiler
 
 main: ${FILES}