make, scripts: Re-add files necessary for building ytools

Re-add everthing needed for building and packaging ytools. This is a
big commit, 2002 lines of code. It mostly consists of C/C++ machinery,
plus some documentation-related stuff.

Signed-off-by: Jan Lindemann <jan@janware.com>

make/test-exe.mk

@@ -0,0 +1,32 @@
+# generic utility modules
+# (c) 2001 jannet it services
+# contact@jannet.de
+# $Id$
+
+EXE_BASENAME ?= test-$(notdir $(shell $(PWD)))
+
+include $(JWBDIR)/make/run.mk
+
+all: $(EXE)
+install:
+clean: execlean localclean profclean testclean
+distclean:
+run test: all.dirs $(EXE) $(EXE_BIN)
+strace: $(EXE) $(EXE_BIN)
+test: test.done
+
+test.done:
+	if ! 2>&1 make run > test.out 2>&1; then \
+		$(CAT) test.out; \
+		exit 1; \
+	fi
+	touch $@
+
+testclean:
+	$(RM) -rf test.done test.out
+
+ifeq ($(USE_PROJECT_LIB),true)
+$(LIB_SO): $(LIB_A)
+$(EXE): $(LIB_SO)
+endif
+all.dirs: