Add missing #includes

Some header files in stagefright try to use DISALLOW_EVIL_CONSTRUCTORS
(and even DISALLOW_IMPLICIT_CONSTRUCTORS, which isn't defined anywhere
in stagefright) without including the proper header.

With clang, this results in a build failure - with gcc,
it results in DISALLOW_EVIL_CONSTRUCTORS/DISALLOW_IMPLICIT_CONSTRUCTORS
not doing what they were intended to do, instead appearing as a method
in the DWARF debug sections of files using the headers.

Change-Id: Ie4e99affe98ed8fb1bfcf5ec604c19dcd5311c62
Signed-off-by: Bernhard Rosenkraenzer <Bernhard.Rosenkranzer@linaro.org>