Make Stap compatible with Android

[Alexander Lochmann]

Hi folks,

it's been a long time since my first approach to submit my Android patch
set.
I re-worked my code 'a bit' and stripped it down to the bare essentials.
The result is attached to this mail. The patch is based on release-3.2.
It basically adds a new configure options: --with-android. This option
makes the configure libelf check optional and disables some parts of
stap{run,io} which depend on libelf.
The result is two binaries, staprun and stapio, which can be executed on
Android.

What do you think about these changes?

Regards,
Alex

-- 
Technische Universität Dortmund
Alexander Lochmann                PGP key: 0xBC3EF6FD
Otto-Hahn-Str. 16                 phone:  +49.231.7556141
D-44227 Dortmund                  fax:    +49.231.7556116
http://ess.cs.tu-dortmund.de/Staff/al
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