Release coccinelle-0.2.5-rc2

Release coccinelle-0.2.5-rc2

** Language:
- Make a very small attempt to parse C++ code, amounting to accepting
  identifiers containing ::, tilde, and template invocations.  Use the
  option -c++.  This is not likely to be very useful in practice.

** Features:
- support transformations on variables (only) in declarations that declare
  multiple variables
- allow #endif XXX in C code
- relax_include_path now applied to non local includes too, in which case
  it tries to find a unique file with a suffix of the provided name.
  this is useful for directories that are intended to be symbolic links.
- support matching and removing #undef
- support for iteration in ocaml, requires use of -no_show_diff
- calls to likely and unlikely propagate test expression status to their
  arguments

** Bugfix:
- improved parsing of expressions to allow ... to the right of operators in
  more places