Fixed many typos.

Conflicts fixed, mainly because 2.8 has no cluster support / files:
	00-RELEASENOTES
	src/cluster.c
	src/crc16.c
	src/redis-trib.rb
	src/redis.h

tests/unit/scripting.tcl

@@ -34,7 +34,7 @@ start_server {tags {"scripting"}} {
         r eval {return {1,2,3,'ciao',{1,2}}} 0
     } {1 2 3 ciao {1 2}}
 
-    test {EVAL - Are the KEYS and ARGS arrays populated correctly?} {
+    test {EVAL - Are the KEYS and ARGV arrays populated correctly?} {
         r eval {return {KEYS[1],KEYS[2],ARGV[1],ARGV[2]}} 2 a b c d
     } {a b c d}