debug/strace: fix strace 4.5.19 to properly build with latest Linux kernels

Here's a couple of patches to get strace 4.5.19 to configure and build
properly with the latest kernel headers. Not pretty, but hopefully
enough while we wait for 4.5.20 to be released.

With the current strace-4.5.19 patches I failed to get the configure
script running even on my host environment. Also, when cross building
the configure script needs to look for the proper system headers to be
able to properly set HAVE_LINUX_NETLINK_H. Otherwise you get:

[EXTRA] Building strace
[ERROR] /home/jocke/x-tools/targets/src/strace-4.5.19/net.c:976:
error: field 'nl' has incomplete type
[ERROR] make[2]: *** [net.o] Error 1
[ERROR] make[1]: *** [all] Error 2

The fix was simple, backport a change set from the git[1] tree and run
autoreconf to update the configure script.

[1] - http://strace.git.sourceforge.net/git/gitweb.cgi?p=strace/strace;a=commit;h=f0df31e71a58c6e79ba77c1a9d84b2f38d44bec7

This is a somewhat ordered TODO list:

Recuring tasks:

- update versions for every tools...

Non-recurring tasks:

- build our own versions for (minimum versions):

    m4          1.4.12

    autoconf    2.63

    automake    1.10.2

    libtool     2.2.4

- uClinux

- add newlib (for enhanced bare metal)

  - may need heavy tweaks and bends in gcc.sh

  - try to make it generic, will help for uClibc++

  - check whether it supports running under uClinux

- uClibc++

  - see newlib, above

- Cygwin target (needs newlib)

  - so we can complie for Windows/Cygwin

- mingw32 target

  - so we can compile for Windows/Win32

- mingw32 host

  - so we can run natively under Windows/Win32 (without requiring Cygwin)

- eglibc config file

  - see: http://sourceware.org/ml/crossgcc/2009-05/msg00022.html

- multilib