Upgrading to binutils-2.22

 * Added --with-ld=default
 * Added --with-lto
 * Fixed ld script for ARM
 * Options are prepared for future activation of gold.

Change-Id: Id9618904055e18d1b37f5e9585f775c367ff356e
Allow install of binutils and import texinfo

 - Enable installing binutils from the base system.

 - Import texinfo which is required for the binutils tools
   to be compiled.

 - Also adapted the fetch rules to correctly generate the
   gitignore files for gcc, and allow the case of multiple
   modules in the same directory, as found in gnu/dist.

Warning: This patch has an entry in docs/UPDATING

Change-Id: Ib781734e8fd7f9c6265fa65d62ba2cf3fccbc5ba
Enable optional GCC install and GCC improvements

 -By adding MKGCC=yes and MKGCCCMDS=yes on the make commandline
   it is now possible to compile and install GCC on the system.

   Before doing this, if you are not using the build.sh script,
   you will need to call the fetch scripts in order to retrieve
   the sources of GCC and its dependencies.

 -Reduce difference with NetBSD share/mk

   Move Minix-specific parameters from bsd.gcc.mk to bsd.own.mk,
   which is anyway patched, so that bsd.gcc.mk is now aligned
   on the NetBSD version.

 -Clean libraries dependencies, compiles stdc++ only if gcc is
   also compiled (it is part of the gcc sources)

 -Correct minix.h header sequence, cleanup spec headers.

 -Fix cross-compilation from a 32bit host targeting MINIX/arm

Change-Id: I1b234af18eed4ab5675188244e931b2a2b7bd943
releasetools/arm_sdimage.sh

 - adapt usr partition size
 - reformulate partition sizes for easier adaptations
 - ensure 4k-block alignement of the partitions

Change-Id: I88787614163a7be177acb5dbf454b26387376a47