* user/bsp.t, user/conf.t, user/init.t, user/intr.t, user/overview.t,
user/timer.t: Correct default values. Make it clear that confdefs.h
calculates the memory required for you.
PR 681/doc
PR 682/doc
* buildc.t, buildrt.t, sample.t: Fix PATH and tar examples. Enable
binutils link again.
* user/overview.t: Chapter numbering in preface was wrong.
* SUPPORT, LICENSE: New files.
* Numerous files touched as part of merging the 4.5 branch
onto the mainline development trunk and ensuring that the
script that cuts snapshots and releases works on the documentation.
