Rewrote configure.in and replaced header.in with one generated by autoheader, added copyright notice to all source files as per GNU standards, and changed "pv --version" output to conform to GNU standards.

autoconf/make/rules.mk

@@ -12,7 +12,7 @@
 	   $(CC) $< $(<:%.c=%) $(srcdir) $(CFLAGS) $(CPPFLAGS) > $@
 
 #
-# NLS stuff
+# Native language support
 #
 
 %.mo: %.po

autoconf/make/vars.mk

@@ -11,6 +11,7 @@ infodir = @infodir@
 mandir = @mandir@
 etcdir = @prefix@/etc
 datadir = @datadir@
+datarootdir = @datarootdir@
 sbindir = @sbindir@
 
 VPATH = $(srcdir)
@@ -27,7 +28,6 @@ MSGMERGE = msgmerge
 CATOBJEXT = @CATOBJEXT@
 INSTOBJEXT = @INSTOBJEXT@
 
-@SET_MAKE@
 SHELL = /bin/sh
 CC = @CC@
 INSTALL = @INSTALL@