Update the code to better reflect recommended style:

Use != instead of <> since <> is documented as "obsolescent".
Use "is" and "is not" when comparing with None or type objects.
diff --git a/Lib/plat-irix5/FL.py b/Lib/plat-irix5/FL.py
index f85237b..ae665e3 100755
--- a/Lib/plat-irix5/FL.py
+++ b/Lib/plat-irix5/FL.py
@@ -7,7 +7,7 @@
 _v21 = 1
 ##import fl
 ##try:
-##	_v20 = (fl.get_rgbmode <> None)
+##	_v20 = (fl.get_rgbmode is not None)
 ##except:
 ##	_v20 = 0
 ##del fl