python-schedutils: Correct typos in usage messages

Correct typos in usage messages
	- "chrt" should say "pchrt"
	- "taskset" should say "ptaskset"

Also update the email address for bug reports and patches.

Signed-off-by: John Kacur <jkacur@redhat.com>
Signed-off-by: Jiri Kastner <jkastner@redhat.com>
diff --git a/pchrt.py b/pchrt.py
index c4f1f2c..0761792 100755
--- a/pchrt.py
+++ b/pchrt.py
@@ -18,7 +18,7 @@
 
 def usage():
 	print '''pchrt (python-schedutils)
-usage: chrt [options] [prio] [pid | cmd [args...]]
+usage: pchrt [options] [prio] [pid | cmd [args...]]
 manipulate real-time attributes of a process
   -b, --batch                        set policy to SCHED_BATCH
   -f, --fifo                         set policy to SCHED_FIFO
@@ -32,7 +32,7 @@
 
 You must give a priority if changing policy.
 
-Report bugs and send patches to <acme@ghostprotocols.net>'''
+Report bugs and send patches to <tuna-devel@lists.fedorahosted.org>'''
 	return
 
 def show_priority_limits(policy):
diff --git a/ptaskset.py b/ptaskset.py
index 15f0ec5..afd1847 100755
--- a/ptaskset.py
+++ b/ptaskset.py
@@ -18,7 +18,7 @@
 
 def usage():
 	print '''ptaskset (python-schedutils)
-usage: taskset [options] [mask | cpu-list] [pid | cmd [args...]]
+usage: ptaskset [options] [mask | cpu-list] [pid | cmd [args...]]
 set or get the affinity of a process
 
   -p, --pid                  operate on existing given pid