* lib/adlint/cc1/scanner.rb : Fix preprocessor in order not to abend
  when a function-like macro generates a hexadecimal integer-constant
  from standalone prefix and number by the concatenation operator.

* features/code_check/E0008.feature : Add token concatenation scenarios
  to reproduce the bug reported on the AdLint PAD site.
Bump version for 3.2.7 RC release