TWRP-ify AOSP code

Pull in most TWRP sources
Stub out partition management code
Make it compile -- probably will not boot
Kind of a mess but have to start somewhere
diff --git a/pigz/Makefile b/pigz/Makefile
new file mode 100644
index 0000000..fa47e2b
--- /dev/null
+++ b/pigz/Makefile
@@ -0,0 +1,47 @@
+CFLAGS=-O3
+
+pigz: pigz.o yarn.o
+	cc -o pigz pigz.o yarn.o -lpthread -lz
+	ln -f pigz unpigz
+
+pigz.o: pigz.c yarn.h
+
+yarn.o: yarn.c yarn.h
+
+dev: pigz pigzt pigzn
+
+pigzt: pigzt.o yarnt.o
+	cc -o pigzt pigzt.o yarnt.o -lpthread -lz
+
+pigzt.o: pigz.c yarn.h
+	cc -Wall -O3 -DDEBUG -g -c -o pigzt.o pigz.c
+
+yarnt.o: yarn.c yarn.h
+	cc -Wall -O3 -DDEBUG -g -c -o yarnt.o yarn.c
+
+pigzn: pigzn.o
+	cc -o pigzn pigzn.o -lz
+
+pigzn.o: pigz.c
+	cc -Wall -O3 -DDEBUG -DNOTHREAD -g -c -o pigzn.o pigz.c
+
+test: pigz
+	./pigz -kf pigz.c ; ./pigz -t pigz.c.gz
+	./pigz -kfb 32 pigz.c ; ./pigz -t pigz.c.gz
+	./pigz -kfp 1 pigz.c ; ./pigz -t pigz.c.gz
+	./pigz -kfz pigz.c ; ./pigz -t pigz.c.zz
+	./pigz -kfK pigz.c ; ./pigz -t pigz.c.zip
+	compress -f < pigz.c | ./unpigz | cmp - pigz.c
+	rm -f pigz.c.gz pigz.c.zz pigz.c.zip
+
+tests: dev test
+	./pigzn -kf pigz.c ; ./pigz -t pigz.c.gz
+	rm -f pigz.c.gz
+
+docs: pigz.pdf
+
+pigz.pdf: pigz.1
+	groff -mandoc -f H -T ps pigz.1 | ps2pdf - pigz.pdf
+
+clean:
+	rm -f *.o pigz unpigz pigzn pigzt pigz.c.gz pigz.c.zz pigz.c.zip