Whitespace normalization.  Ran reindent.py over the entire source tree.
diff --git a/Demo/scripts/mkrcs.py b/Demo/scripts/mkrcs.py
index 917b4fe..45a68b9 100755
--- a/Demo/scripts/mkrcs.py
+++ b/Demo/scripts/mkrcs.py
@@ -9,52 +9,52 @@
 import os
 
 def main():
-	rcstree = 'RCStree'
-	rcs = 'RCS'
-	if os.path.islink(rcs):
-		print '%r is a symlink to %r' % (rcs, os.readlink(rcs))
-		return
-	if os.path.isdir(rcs):
-		print '%r is an ordinary directory' % (rcs,)
-		return
-	if os.path.exists(rcs):
-		print '%r is a file?!?!' % (rcs,)
-		return
-	#
-	p = os.getcwd()
-	up = ''
-	down = ''
-	# Invariants:
-	# (1) join(p, down) is the current directory
-	# (2) up is the same directory as p
-	# Ergo:
-	# (3) join(up, down) is the current directory
-	#print 'p =', repr(p)
-	while not os.path.isdir(os.path.join(p, rcstree)):
-		head, tail = os.path.split(p)
-		#print 'head = %r; tail = %r' % (head, tail)
-		if not tail:
-			print 'Sorry, no ancestor dir contains %r' % (rcstree,)
-			return
-		p = head
-		up = os.path.join(os.pardir, up)
-		down = os.path.join(tail, down)
-		#print 'p = %r; up = %r; down = %r' % (p, up, down)
-	there = os.path.join(up, rcstree)
-	there = os.path.join(there, down)
-	there = os.path.join(there, rcs)
-	if os.path.isdir(there):
-		print '%r already exists' % (there, )
-	else:
-		print 'making %r' % (there,)
-		makedirs(there)
-	print 'making symlink %r -> %r' % (rcs, there)
-	os.symlink(there, rcs)
+    rcstree = 'RCStree'
+    rcs = 'RCS'
+    if os.path.islink(rcs):
+        print '%r is a symlink to %r' % (rcs, os.readlink(rcs))
+        return
+    if os.path.isdir(rcs):
+        print '%r is an ordinary directory' % (rcs,)
+        return
+    if os.path.exists(rcs):
+        print '%r is a file?!?!' % (rcs,)
+        return
+    #
+    p = os.getcwd()
+    up = ''
+    down = ''
+    # Invariants:
+    # (1) join(p, down) is the current directory
+    # (2) up is the same directory as p
+    # Ergo:
+    # (3) join(up, down) is the current directory
+    #print 'p =', repr(p)
+    while not os.path.isdir(os.path.join(p, rcstree)):
+        head, tail = os.path.split(p)
+        #print 'head = %r; tail = %r' % (head, tail)
+        if not tail:
+            print 'Sorry, no ancestor dir contains %r' % (rcstree,)
+            return
+        p = head
+        up = os.path.join(os.pardir, up)
+        down = os.path.join(tail, down)
+        #print 'p = %r; up = %r; down = %r' % (p, up, down)
+    there = os.path.join(up, rcstree)
+    there = os.path.join(there, down)
+    there = os.path.join(there, rcs)
+    if os.path.isdir(there):
+        print '%r already exists' % (there, )
+    else:
+        print 'making %r' % (there,)
+        makedirs(there)
+    print 'making symlink %r -> %r' % (rcs, there)
+    os.symlink(there, rcs)
 
 def makedirs(p):
-	if not os.path.isdir(p):
-		head, tail = os.path.split(p)
-		makedirs(head)
-		os.mkdir(p, 0777)
+    if not os.path.isdir(p):
+        head, tail = os.path.split(p)
+        makedirs(head)
+        os.mkdir(p, 0777)
 
 main()