Staging areas for comments on various issues

Changes to XPCOM

• http://weblogs.mozillazine.org/roadmap/archives/009727.html
• http://benjamin.smedbergs.us/blog/2006-02-18/exceptions-dont-solve-the-problem/
• http://benjamin.smedbergs.us/blog/2006-02-18/xpcom-detecting-reference-cycles-or-switching-to-gc/