Michael ABBOTT reported that populate is not relocatable.
Fix this by determining both the cross-readelf and the sys-root at runtime, not at build time.

/trunk/configure | 1 1 0 0 +
/trunk/scripts/crosstool.sh | 14 6 8 0 ++++++--------
/trunk/tools/populate.in | 6 4 2 0 ++++--
3 files changed, 11 insertions(+), 10 deletions(-)

 # MIPS specific config options

 config ARCH_mips

     select ARCH_SUPPORTS_BOTH_ENDIAN

     select ARCH_DEFAULT_BE

     select ARCH_SUPPORT_ARCH

     select ARCH_SUPPORT_ABI

     select ARCH_SUPPORT_TUNE

     help

       The MIPS architecture, as defined by:

         http://www.mips.com/