exported STIRConfig.cmake can have problems with "too much" version info #1557

On @CateGascoigne 's Ubuntu 22.04, we followed https://github.com/SyneRBI/SIRF/wiki/Building-SIRF-and-CIL-with-conda. This gave an error when configuring SIRF where CMake complained about the line generated from

CMake Error at /home/cate/devel/buildConda/INSTALL/lib/cmake/STIR-6.2/STIRConfig.cmake:128 (find_package): 
  find_package called with invalid argument "1.14.4-3"

CMake was happy once we hand-edited the (exported) STIRConfig.cmake to use version 1.14.4.

We will therefore have to trim the version keyword(s).