patches to dionaea to be able to build package on modern systems

[xambroz]

Hello,
this is bundle of patches to be able to build dionaea package on modern Linux distributions.
In my case tested on Fedora 40/41 (python 3.12+) and RHEL9 (python 3.9+)

• dionaea-03_in6_pktinfo.patch
  ipv6 structures in <netinet/in.h> are used by the <sys/socket.h> so it should be included first
  ipv6 structures needs explicit CFLAGS " -D_GNU_SOURCE" to compile on linux - see dionaea-16_cmake_append_flags.patch

• dionaea-15_pyeval_callobject.patch
  The PyEval_CallObject API is obsolete in python 3.12, use PyObject_CallObject instead

• dionaea-16_cmake_append_flags.patch
  APPEND adds unwanted ";" character if there are already some CMAKE_C_FLAGS defined

• dionaea-17_cmake_dirs.patch
  Change handling of dirs to be able to configure/install to base system having
  configuration in /etc/,
  data files in /var
  and rest in /usr,
  while keeping the possibility to install to /opt/dionaea by default

• dionaea-18_python_regex.patch
  new versions of python 3.9+ require regex patterns defined as raw strings, otherwise report syntax error for unknown stirng escape sequence like \s

• dionaea-19_setuptools.patch
  Migrate setup.py form deprecated Distutils to setuptools.
  Handle the building by cmake from setup.py template processed in cmake build directory.
  Newer versions of setuptools complain about using absolute paths in setup.