C/C++: Fix function pointer parsing

C/C++: Fix function pointer parsing

* semantic/bovine/c.by (variablearg-opt-name): Support parsing of
  function pointers inside an argument list.

* semantic/bovine/c.el (semantic-c-reconstitute-token): Change
  handling of function pointers; instead of seeing them as variables,
  handle them as functions with a 'function-pointer' attribute.  Also,
  correctly deal with function pointers as function arguments.
  (semantic-c-reconstitute-function-arglist): New function to parse
  function pointers inside an argument list.
  (semantic-format-tag-name): Use 'function-pointer' attribute instead
  of the old 'functionpointer-flag'.

* tests/cedet/semantic/test/manual/cedet/testsppreplace.c:
* tests/cedet/semantic/test/manual/cedet/testsppreplaced.c: Disable
  test which now breaks due to improved function pointer parsing.
  This test is broken anyway, since it just succeeded because the
  argument list was not parsed at all before this commit.  The
  underlying bug was always present in the semantic preprocessor.