Everywhere: Remove everything non-essential for "make clean all"

This commit removes everything not strictly necessary for running
"make clean all" inside jw-build.

packaging jw-devtest. This cuts the repo down from 24077 to 4725
lines of code.

The idea is to

1) Further remove bloat from the remaining bits

2) Re-add what's necessary to build and package other essential repos.

   The decision should be based on whether or not jw-build can also be
   useful in a non-janware context.

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

make/so.mk

@@ -1,24 +0,0 @@
-# generic utility modules
-# (c) 2001 jannet it services
-# contact@jannet.de
-# $Id$
-
-include $(JWBDIR)/make/defs.mk
-include $(JWBDIR)/make/defs-cpp.mk
-
-LDFLAGS                     += -shared
-BUILD_SHOBJS                 = $(addprefix $(BUILD_LIBDIR)/, $(SHOBJS))
-SHOBJS                       = $(patsubst %.cpp,$(SO_PREFIX)%.so,$(patsubst %.cc,$(SO_PREFIX)%.so,$(patsubst %.c,$(SO_PREFIX)%.so,$(SRC_ALL_CPP))))
-INSTALLED_SHOBJS            += $(addprefix $(INSTALL_LIBDIR)/,$(SHOBJS))
-INSTALLED_ALL_LIBS          += $(INSTALLED_SHOBJS)
-
-include $(JWBDIR)/make/ldlibpath.mk
-include $(JWBDIR)/make/debugger.mk
-include $(JWBDIR)/make/rules.mk
-
-all: $(SHOBJS) $(BUILD_SHOBJS)
-clean: objclean textclean localclean profclean
-install: $(ALL) install_dir_LIB installso
-
-$(BUILD_LIBDIR)/%.so: %.so
-	install -m 755 $< $@