Spelling fixes supplied by Rob W. W. Hooft. All these are fixes in either

comments, docstrings or error messages. I fixed two minor things in
test_winreg.py ("didn't" -> "Didn't" and "Didnt" -> "Didn't").

There is a minor style issue involved: Guido seems to have preferred English
grammar (behaviour, honour) in a couple places. This patch changes that to
American, which is the more prominent style in the source. I prefer English
myself, so if English is preferred, I'd be happy to supply a patch myself ;)

Demo/sgi/gl/kites.py

@@ -43,7 +43,7 @@ def viewobj (r, s, t, mat) :
 	popmatrix()
 
 #
-# makeobj : the contructor of the object
+# makeobj : the constructor of the object
 #
 def mkobj () :
 	v0 = (-5.0 ,0.0, 0.0)

Demo/sgi/video/OldVcopy.py

@@ -15,10 +15,10 @@ def report(time, iframe):
 	print 'Frame', iframe, ': t =', time
 
 def usage():
-	sys.stderr.write('usage: Vcopy [-t type] [-m treshold] [-a] infile outfile\n')
+	sys.stderr.write('usage: Vcopy [-t type] [-m threshold] [-a] infile outfile\n')
 	sys.stderr.write('-t Convert to other type\n')
 	sys.stderr.write('-a Automatic\n')
-	sys.stderr.write('-m Convert grey to mono with treshold\n')
+	sys.stderr.write('-m Convert grey to mono with threshold\n')
 	sys.stderr.write('-d Convert grey to mono with dithering\n')
 	sys.exit(2)
 

Demo/sgi/video/Vrec.py

@@ -26,7 +26,7 @@ def usage():
 	print '-g bits       : greyscale (2, 4 or 8 bits)'
 	print '-G            : 2-bit greyscale dithered'
 	print '-m            : monochrome dithered'
-	print '-M value      : monochrome tresholded with value'
+	print '-M value      : monochrome thresholded with value'
 	print '-f            : Capture fields (in stead of frames)'
 	print '-P frames     : preallocate space for "frames" frames'
 	print 'moviefile     : here goes the movie data (default film.video)'

Demo/sgi/video/Vrecb.py

@@ -45,7 +45,7 @@ def usage():
 	print '-g bits       : greyscale (2, 4 or 8 bits)'
 	print '-G            : 2-bit greyscale dithered'
 	print '-m            : monochrome dithered'
-	print '-M value      : monochrome tresholded with value'
+	print '-M value      : monochrome thresholded with value'
 	print '-f            : Capture fields (instead of frames)'
 	print '-n number     : Capture this many frames (default 60)'
 	print '-N memsize    : Capture frames fitting in this many kbytes'