Tests: Rename RunCMake.FindPkgConfig LIBRARY_PATH case to SYSTEM_PATH

Prepare to cover CFLAGS too.

Tests/RunCMake/FindPkgConfig/FindPkgConfig_LIBRARY_PATH-stdout.txt → Tests/RunCMake/FindPkgConfig/FindPkgConfig_SYSTEM_PATH-stdout.txt

@@ -1,3 +1,3 @@
 -- ZOT_LIBRARIES='zot'
--- ZOT_LINK_LIBRARIES='[^']*/Tests/RunCMake/FindPkgConfig/FindPkgConfig_LIBRARY_PATH-build/root/lib/prefix-zot-suffix'
--- ZOT_LDFLAGS='-L[^']*/Tests/RunCMake/FindPkgConfig/FindPkgConfig_LIBRARY_PATH-build/root/lib;-lzot'
+-- ZOT_LINK_LIBRARIES='[^']*/Tests/RunCMake/FindPkgConfig/FindPkgConfig_SYSTEM_PATH-build/root/lib/prefix-zot-suffix'
+-- ZOT_LDFLAGS='-L[^']*/Tests/RunCMake/FindPkgConfig/FindPkgConfig_SYSTEM_PATH-build/root/lib;-lzot'

Tests/RunCMake/FindPkgConfig/RunCMakeTest.cmake

@@ -59,6 +59,6 @@ Libs: -L\${libdir}
   run_cmake(FindPkgConfig_GET_MATCHING_MODULE_NAME)
   run_cmake(FindPkgConfig_empty_target)
   if(NOT PKG_CONFIG_DONT_SUPPORT_SPACES_IN_PATH)
-    run_cmake(FindPkgConfig_LIBRARY_PATH)
+    run_cmake(FindPkgConfig_SYSTEM_PATH)
   endif()
 endif ()