HOWTO_RELEASE

1: Increment CAPI_INTERFACE_X in configure.in
   - For a release with no interface changes just bump REVISION.
     [ Even if *nothing* changed in CAPI ]
   - Adding interfaces, bump CURRENT/AGE, set REVISION to 0.
   - Deleting interfaces / compatibility issues - bump CURRENT, others to zero
     [ THIS MUST BE CAREFULLY AVOIDED ]

2: Increment release version:
   - VERSION_PATCH for bugfixes/improvements (even breaking C++ API)
   - VERSION_MINOR for NEW interfaces in the C lib
   - VERSION_MAJOR for SUBSTANTIAL additions or C lib ABI break
     [ THIS MUST BE CAREFULLY AVOIDED ]
   
3: Update the NEWS file

4: make dist

5: check everything is ok ;)

6: Tag rel-x-y-z (MAJOR-MINOR-PATCH)