Introduce 'test' target, add /proc/net/tcp parsing to it

The test itself doesn't do much yet, but might shed some light on what's going
on in https://github.com/raboof/nethogs/issues/22

Makefile

@@ -2,13 +2,10 @@ export VERSION      := 0
 export SUBVERSION   := 8
 export MINORVERSION := 2-SNAPSHOT
 
-all: nethogs decpcap_test
+all: nethogs decpcap_test test
 	$(MAKE) -f MakeApp.mk $@
 	$(MAKE) -f MakeLib.mk $@
 
-runtests: test
-	./test
-
 .PHONY:
 tgz: clean
 	cd .. ; tar czvf nethogs-$(VERSION).$(SUBVERSION).$(MINORVERSION).tar.gz --exclude-vcs nethogs/*
@@ -33,6 +30,9 @@ nethogs:
 decpcap_test:
 	$(MAKE) -f MakeApp.mk $@
 
+test:
+	$(MAKE) -f MakeApp.mk $@
+
 clean:
 	$(MAKE) -f MakeApp.mk $@
 	$(MAKE) -f MakeLib.mk $@