Release coccinelle-0.1.9

Release coccinelle-0.1.9

** Language:
   - allow fresh identifiers to be declared using ## such that the value mixes
     both strings and previously declared metavariables

** Features:
   - better handling of expanded code containing ##. Now compute the
     result.
   - more precise warning message for the "'\' outside define".
     Thanks to Nicholas Mc Guire for pointing out the problem.
   - more precise warning message related to ifdefization.
     Thanks to Derek Jones for pointing out the problem.
   - we don't create any more certain files in /tmp (they may be a cause
     of security problems).
     Thanks to Eugeniy Meshcheryakov for pointing out the problem.
   - More optimization for the case of just deleting a complete function.
     Allows this to happen without tracing through all the control-flow
     paths.  Thanks to Francois Bissyande for pointing out the problem.
   - prevent code from being added to the beginning or end of a disjunction
   - more information about why a script is not applied when using -debug option
   - added -no_safe_expressions option
   - added -no_loops option.  Ignores back edges derived from looping
     constructs.  This is unsafe, but perhaps useful for bug finding, as it can
     be more efficient.
   - for semantic matches, allow "minus" on same code with multiple
     environments
   - better error message for mismatch of parenthesis in column 0 with normal
     parenthesis.  Thanks to Derek Jones for pointing out the problem.
   - allow disjunctions on function return types.  Thanks to Pierre Habouzit
     for pointing this out.

** Bugfix:
   - keep disjunction in the proper order for structure initialization fields
   - variables declared in different places should not seem to match each
     other
   - drop complaints about label metavariables not being used
   - drop test information from the type of an expression when the expression
     is bound to a metavariable
   - nests should not extend beyond the before and after code, even if the
     before and after code matches the nest code
   - nests should extend into conditionals that end in error exit
   - take into account metavariables on "else".  Thanks to Derek Jones for
     pointing out the problem.
   - print single quotes on generated character constants
   - better typedef handling in the initialisation/affectation builtin
     isomorphism, cf -test init_affect_typedef
   - support disjunction of types on variable declaration
   - allow @ within strings in script code.  ignore // comment lines in script
     code.
   - don't drop + code placed after the transformed code
   - drop spaces produced by removing code before semicolons
   - adjusted spacing within generated code
   - less verbose -sp.  Thanks to Derek Jones for pointing out the problem.
   - accept multiple type names in a SmPL typedef declaration.