micrOMEGAs interface to SModelS v2.2

Interface files for micrOMEGAs_v5 series to work with SModelS v2.2 (see what's new).

For an existing micrOMEGAs installation (in particular versions 5.2.7 to 5.2.10), the files

   include/SMODELS.inc 
   include/smodels_parameters.ini
   sources/smodels.c
   sources/smodels.cc
   Packages/SMODELS.makef

should be replaced by the ones provided here.

The file codesnippet_for_main.c provides an example code snippet for calling SModelS v2.2 in any micrOMEGAs main program and printing the results; this is to replace the part

  #ifdef SMODELS
  { .....

  }   
  #endif 

in the default main.c files of micrOMEGAs.

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NOTE: If you are using python ≤ 3.7, change

  char *VERSION="2.2.0"

to

  char *VERSION="2.2.0.post1"

in the SMODELS.inc file provided here

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