Moved stand-alone libs to libs/ directory and added libs/subcircuit

bigint/Makefile

@@ -1,73 +0,0 @@
-# Mention default target.
-all:
-
-# Implicit rule to compile C++ files.  Modify to your taste.
-%.o: %.cc
-	g++ -c -O2 -Wall -Wextra -pedantic $<
-
-# Components of the library.
-library-objects = \
-	BigUnsigned.o \
-	BigInteger.o \
-	BigIntegerAlgorithms.o \
-	BigUnsignedInABase.o \
-	BigIntegerUtils.o \
-
-library-headers = \
-	NumberlikeArray.hh \
-	BigUnsigned.hh \
-	BigInteger.hh \
-	BigIntegerAlgorithms.hh \
-	BigUnsignedInABase.hh \
-	BigIntegerLibrary.hh \
-
-# To ``make the library'', make all its objects using the implicit rule.
-library: $(library-objects)
-
-# Conservatively assume that all the objects depend on all the headers.
-$(library-objects): $(library-headers)
-
-# TESTSUITE (NOTE: Currently expects a 32-bit system)
-# Compiling the testsuite.
-testsuite.o: $(library-headers)
-testsuite: testsuite.o $(library-objects)
-	g++ $^ -o $@
-# Extract the expected output from the testsuite source.
-testsuite.expected: testsuite.cc
-	nl -ba -p -s: $< | sed -nre 's,^ +([0-9]+):.*//([^ ]),Line \1: \2,p' >$@
-# Run the testsuite.
-.PHONY: test
-test: testsuite testsuite.expected
-	./run-testsuite
-testsuite-cleanfiles = \
-	testsuite.o testsuite testsuite.expected \
-	testsuite.out testsuite.err
-
-# The rules below build a program that uses the library.  They are preset to
-# build ``sample'' from ``sample.cc''.  You can change the name(s) of the
-# source file(s) and program file to build your own program, or you can write
-# your own Makefile.
-
-# Components of the program.
-program = sample
-program-objects = sample.o
-
-# Conservatively assume all the program source files depend on all the library
-# headers.  You can change this if it is not the case.
-$(program-objects) : $(library-headers)
-
-# How to link the program.  The implicit rule covers individual objects.
-$(program) : $(program-objects) $(library-objects)
-	g++ $^ -o $@
-
-# Delete all generated files we know about.
-clean :
-	rm -f $(library-objects) $(testsuite-cleanfiles) $(program-objects) $(program)
-
-# I removed the *.tag dependency tracking system because it had few advantages
-# over manually entering all the dependencies.  If there were a portable,
-# reliable dependency tracking system, I'd use it, but I know of no such;
-# cons and depcomp are almost good enough.
-
-# Come back and define default target.
-all : library $(program)