policy on upgrading libraries in release branches(bug with prototype and IE8)

[Adam Heath]

We had a client report a problem with IE8 when viewing an orderlist. 
This was tracked down to bug in prototype.  The version in ofbiz is 
1.6.0.2.  There is a 1.6.0.3 version, which was release *before* 
09.04.  1.6.1 is current, released Sept. 1, 2009, after 09.04.

I have tracked down the actual commit that fixes it, at 
http://github.com/sstephenson/prototype/commits/9787801f0619f4ac67e48ed632956e9957baad9e

I can backport just the diff(it's quite small), or I can upgrade the 
library to 1.6.1, which includes the fix.  But I don't know what the 
correct policy is for issues like this.