Fixed bug in intelbase with license file

$INTEL_LICENSE_FILE can be a list of directory which contain the license
file. For the install cfg, PSET_LICENSE_FILE must point to the license
file itself, not a directory. This patch iterates throught the
directories in $INTEL_LICENSE_FILE until a .lic file is found.
Some small style changesSome small style changes
improve error messages, suggest use of $INTEL_LICENSE_FILE
Merge pull request #251 from wpoely86/intelbase-lic

Fixed small bug with license file.