Moved author and date to boilerplate.tex.
Added copyright.tex to all files.
Added descr of check_interval to libsys.tex.
Corrected lotsa typos in tut.tex (thanks to George M. Sipe).
Corrected mktuple (should be newtupleobject) example in ext.tex.
diff --git a/Doc/boilerplate.tex b/Doc/boilerplate.tex
new file mode 100644
index 0000000..f8fc959
--- /dev/null
+++ b/Doc/boilerplate.tex
@@ -0,0 +1,8 @@
+\author{
+ Guido van Rossum \\
+ Dept. CST, CWI, P.O. Box 94079 \\
+ 1090 GB Amsterdam, The Netherlands \\
+ E-mail: {\tt guido@cwi.nl}
+}
+
+\date{6 Oct 1994 \\ Release 1.1} % XXX update before release!