Make verifiable a DSO and add NAME_SUFFIX support

Build option DSO=1 generates libverifiable.so which can be
used to reduce the combined binary size.

Build option NAME_SUFFIX can be used to a add suffix to all
generated binaries. e.g. NAME_SUFFIX=_mpi

Added new make target: clean_intermediates

verifiable/Makefile

@@ -1,13 +1,18 @@
-include ../../makefiles/common.mk
+#
+# Copyright (c) 2015-2025, NVIDIA CORPORATION. All rights reserved.
+#
+# See LICENSE.txt for license information
+#
+include ../src/common.mk
 
 .PHONY: all clean
 
-BUILDDIR := $(abspath ../../build)
+BUILDDIR := $(abspath ../build)
 NCCLDIR := $(BUILDDIR)
 NVCUFLAGS += -I$(NCCLDIR)/include/ -I../include
-DST_DIR := $(BUILDDIR)/test/verifiable
+DST_DIR := $(BUILDDIR)/verifiable
 
-all: $(DST_DIR)/self_test $(DST_DIR)/verifiable.o
+all: $(DST_DIR)/self_test
 
 clean:
 	rm -rf $(DST_DIR)
@@ -18,7 +23,7 @@ include verifiable.mk
 
 self_test: $(DST_DIR)/self_test
 
-$(DST_DIR)/self_test: verifiable.cu verifiable.h
+$(DST_DIR)/self_test: main.cu $(TEST_VERIFIABLE_LIBS)
 	@printf "Linking  %s\n" $@
 	@mkdir -p $(DST_DIR)
-	$(NVCC) -o $@ $(NVCUFLAGS) -DSELF_TEST=1 verifiable.cu $(NVLDFLAGS)
+	$(NVCC) -o $@ $(NVCUFLAGS) $< -L$(TEST_VERIFIABLE_BUILDDIR) -lverifiable $(NVLDFLAGS) -Xlinker "-rpath=\$$ORIGIN"