Add libxi / libxfixes headers.

This patch updates the sysroot headers to include _recent_ versions
of the Xi / XFixes headers that are required to compile SDL2 on Linux.

Note that, while this modifies to
list the missing packages, running the script will not produce the
same output because:

1/ Several manual header overrides were already performed on the
   sysroot, and would be lost when re-running the script :(

2/ The Lucid version of the new X11 headers are missing important
   definitions (e.g. touch support in XInput2.h), and wouldn't
   work when trying to build SDL2 anyway.

Change-Id: I90a66fdf4824331f67382edb477dfa58110a216a
8 files changed