Allow fully qulified file name in tools to check for.
Simplify checking for bash.

/trunk/configure | 30 13 17 0 +++++++++++++-----------------
1 file changed, 13 insertions(+), 17 deletions(-)

 # Compute IA-64-specific values

 CT_DoArchValues() {

     # The architecture part of the tuple:

     CT_TARGET_ARCH="${CT_ARCH}"

 }