cmake KLU examples

AMICI-dev/AMICI ThirdParty/sundials/cmake/tpl/FindKLU.cmake :36 

find_package(KLU CONFIG)

gridlab-d/gridlab-d powerflow/CMakeLists.txt :120 

find_package(KLU)

weigao95/surfelwarp external/eigen3.4/test/CMakeLists.txt :71 

find_package(KLU)

eigenteam/eigen-git-mirror test/CMakeLists.txt :71 

find_package(KLU)

DrTimothyAldenDavis/SuiteSparse Example/CMakeLists.txt :100 

find_package ( KLU 2.3.6 REQUIRED )

jlblancoc/suitesparse-metis-for-windows SuiteSparse/Example/CMakeLists.txt :99 

find_package ( KLU 2.3.1 REQUIRED )