* Migrate set() and frozenset() from the sandbox.
* Install the unittests, docs, newsitem, include file, and makefile update.
* Exercise the new functions whereever sets.py was being used.

Includes the docs for libfuncs.tex.  Separate docs for the types are
forthcoming.
diff --git a/Makefile.pre.in b/Makefile.pre.in
index c87bf6e..3c3c119 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -275,6 +275,7 @@
 		Objects/object.o \
 		Objects/obmalloc.o \
 		Objects/rangeobject.o \
+                Objects/setobject.o \
 		Objects/sliceobject.o \
 		Objects/stringobject.o \
 		Objects/structseq.o \
@@ -500,6 +501,7 @@
 		Include/pystate.h \
 		Include/pythonrun.h \
 		Include/rangeobject.h \
+                Include/setobject.h \
 		Include/sliceobject.h \
 		Include/stringobject.h \
 		Include/structseq.h \