Signed-off-by: NWolfgang Denk <wd@denx.de>

Based on patch by Mike Frysinger, 20 Jun 2006

Modifications are based on the linux kernel approach and
support two use cases:

  1) Add O= to the make command line
  'make O=/tmp/build all'

  2) Set environement variable BUILD_DIR to point to the desired location
  'export BUILD_DIR=/tmp/build'
  'make'

The second approach can also be used with a MAKEALL script
'export BUILD_DIR=/tmp/build'
'./MAKEALL'

Command line 'O=' setting overrides BUILD_DIR environent variable.

When none of the above methods is used the local build is performed and
the object files are placed in the source directory.

- rename CONFIG_BOOTBINFUNC into  CONFIG_INIT_CRITICAL
- rename memsetup into lowlevel_init (function name and source files)

  Add support for NET+50 CPU and ModNET50 board

* Patch by Sam Song, 10 Feb 2004:
  Fix typos in cfi_flash.c

* Patch by Leon Kukovec, 10 Feb 2004
  Fixed long dir entry slot id calculation in get_vfatname

* Patch by Robin Gilks, 10 Feb 2004:
  add "itest" command (operators: -eq, -ne, -lt, -gt, -le, -ge, ==,
  !=, <>, <, >, <=, >=)

- add support for Logotronic DL datalogger board
- cleanup serial line after kermit binary download
- add debugX macro (debug level support)
- update mach-types.h to latest arm.linux.org.uk master list.