Ship Adobe flash player by default

In order to make user's experience easier, we should ship adobe flashplayer by default.
Currently only on i486, as the 64 bit version has several problems:
 1) Has several security issues (released Nov. 2010, and it's still release 10.2)
 2) Has a bug with Debian's eglibc (in amd64), we can fix it by either preloading a library (but the browser too will be affected by that) or by fixing with a bsdiff libflashplayer.so (but adobe's license denies that)

We should create our own package as flashplugin-nonfree doesn't have an automatic update tool (and sometimes will fail the install if the flashplugin is updated).