./configure: fix the tools pattern recognition
- when a variable name was given, with no regexp, the pattern did not correctly extract the variable name

/trunk/configure | 11 8 3 0 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)

 # ia64 specific config options

 # EXPERIMENTAL

 config ARCH_ia64

     select ARCH_64

     select ARCH_SUPPORTS_BOTH_ENDIAN

     help

       The ia64 architecture, as defined by:

         http://www.intel.com/design/itanium/arch_spec.htm