Add tests for config

I have started writing tests for the config functions. This has resulted
in a few changes to the config code (tests working I guess)

I have also added a special "all" config file which (as the name
suggests) runs all test suites

In the makefile I have added the compiled test files to the clean target
and added targets for building and running tests

Makefile

@@ -2,7 +2,9 @@
 
 CFILES   = $(wildcard src/*.c)
 OBJFILES = $(CFILES:.c=.o)
-OUT      = proxy
+TESTFILES   = $(wildcard tests/*.c)
+TESTOUT = $(TESTFILES:.c=)
+OUT      = yaip
 CFLAGS   = -Wall
 LDLIBS   = -lsqlite3
 CC = gcc
@@ -22,7 +24,14 @@ $(OUT): $(OBJFILES)
 %.o: %.c
 	$(CC) $(CFLAGS) -c -o $@ $^
 
+tests/%.test: tests/%.test.c tests/munit/munit.c
+	$(CC) $? -o $@
+
+
+test-%: tests/%.test
+	$<
+
 
 .PHONY: clean
 clean:
-	rm -f $(OBJFILES) $(OUT)
+	rm -f $(OBJFILES) $(OUT) $(TESTOUT)