libxtreemfs-async: async write handler minor changes
libxtreemfs-async: async write handler minor changes

git-svn-id: 3a13c44dc93e83c409b229bacd90df708a5d8688@3093 f8528748-c2c0-11dd-ba5c-d3b7c2b3b534

harnesscloud/xtreemfs,stanik137/xtreemfs,harnesscloud/xtreemfs,rbaerzib/xtreemfs,harnesscloud/xtreemfs,stanik137/xtreemfs,rbaerzib/xtreemfs,jswrenn/xtreemfs,kleingeist/xtreemfs,kleingeist/xtreemfs,jswrenn/xtreemfs,jswrenn/xtreemfs,stanik137/xtreemfs,harnesscloud/xtreemfs,stanik137/xtreemfs,stanik137/xtreemfs,harnesscloud/xtreemfs,rbaerzib/xtreemfs,kleingeist/xtreemfs,jswrenn/xtreemfs,stanik137/xtreemfs,kleingeist/xtreemfs,rbaerzib/xtreemfs,rbaerzib/xtreemfs,stanik137/xtreemfs,kleingeist/xtreemfs,kleingeist/xtreemfs,jswrenn/xtreemfs,kleingeist/xtreemfs,harnesscloud/xtreemfs,jswrenn/xtreemfs,harnesscloud/xtreemfs,kleingeist/xtreemfs,harnesscloud/xtreemfs,rbaerzib/xtreemfs,rbaerzib/xtreemfs,jswrenn/xtreemfs,jswrenn/xtreemfs,rbaerzib/xtreemfs,stanik137/xtreemfs