Fix spelling in comments, documentation and messages

accidently->accidentally
annother->another
choosen->chosen
consideres->considers
decriptor->descriptor
developement->development
paramter->parameter
preceed->precede
preceeding->preceding
priviledge->privilege
propogation->propagation
substraction->subtraction
throught->through
upto->up to
usefull->useful

Fix also grammar in posix-aio-compat.c

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
diff --git a/Changelog b/Changelog
index 28a69af..8b63258 100644
--- a/Changelog
+++ b/Changelog
@@ -78,7 +78,7 @@
 
   - fix savevm/loadvm (Anthony Liguori)
   - live migration: fix dirty tracking windows (Glauber Costa)
-  - live migration: improve error propogation (Glauber Costa)
+  - live migration: improve error propagation (Glauber Costa)
   - qcow2: fix image creation for > ~2TB images (Chris Wright)
   - hotplug: fix error handling for if= parameter (Eduardo Habkost)
   - qcow2: fix data corruption (Nolan Leake)
@@ -386,7 +386,7 @@
   - support of CD-ROM change
   - multiple network interface support
   - initial x86-64 host support (Gwenole Beauchesne)
-  - lret to outer priviledge fix (OS/2 install fix)
+  - lret to outer privilege fix (OS/2 install fix)
   - task switch fixes (SkyOS boot)
   - VM save/restore commands
   - new timer API