Rationalise ./configure
- borrow a lot of ideas from Michael ABBOTT ( http://sourceware.org/ml/crossgcc/2008-12/msg00030.html )
- should be conforming to POSIX 1003.1-2008, non compliance due to bashsims is to be considered a bug
- as a result, it now works with dash
- make a little easier to read in some places
- enforce 4-space indentation
- get rid of futile 'return $?'
- quote all variables assignments
- save and restore IFS prior to and after using alternate values
- simplify the TOOLS_TO_CHECK listing

What's left:
- provide a mean to actually _compare_ version numbers
- change the TOOLS_TO_CHECK pattern style to be able to use '|' in regexp

/trunk/configure | 243 127 116 0 ++++++++++++++++++++++++++++++++------------------------------
1 file changed, 127 insertions(+), 116 deletions(-)

 reporter_name="Nate CASE"

 reporter_url="http://sourceware.org/ml/crossgcc/2008-10/msg00016.html"

 reporter_comment="This is a sample config file for Freescale e500v2 processors (e.g.,

 MPC8548, MPC8572).  It uses eglibc (for e500/SPE patches) and a recent

 gcc (4.3.1, for e500v2 DPFP support) and will generate appropriate

 dual-precision floating point instructions by default.

 Note: If building a Linux kernel with this toolchain, you will want to

 make sure -mno-spe AND -mspe=no are passed to gcc to prevent SPE

 ABI/instructions from getting into the kernel (which is currently

 unsupported).  At this time, the kernel build system only passes

 -mno-spe by default (this should be fixed soon hopefully)."