[IB/CMSSW_6_2_X/fc18_armv7hl_gcc480] Fix ICC toolfile for ARM/OSX

ARM and OSX machines do not have access to AFS.

Fixes:

    **** ERROR: No such file or directory: /build/cmsbuild/tc-scheduled/cms/fc18_armv7hl_gcc480/external/icc/composer_xe_2013.2.146/installation 
    SCRAM does not allow prompting for user input anymore. 
    Please fix the tool file for "icc-f77compiler" and provide a valid value for "ICC_FCOMPILER_BASE".