[cmake] Add runpath for libBlocksRuntime.so

Dispatch build leaves artifacts in both the root directory and the src
directory, but only the src directory was being added to the runpath, so
the libBlocksRuntime.so library might not have been found.

Author: drodriguez

CMakeLists.txt

@@ -82,7 +82,7 @@ if(FOUNDATION_ENABLE_LIBDISPATCH)
   set(libdispatch_cflags -I;${FOUNDATION_PATH_TO_LIBDISPATCH_SOURCE};-I;${FOUNDATION_PATH_TO_LIBDISPATCH_BUILD}/src/swift;-Xcc;-fblocks)
   set(libdispatch_ldflags -L;${FOUNDATION_PATH_TO_LIBDISPATCH_BUILD};-L;${FOUNDATION_PATH_TO_LIBDISPATCH_BUILD}/src;-ldispatch;-lswiftDispatch)
   if(CMAKE_SYSTEM_NAME STREQUAL Linux OR CMAKE_SYSTEM_NAME STREQUAL Android OR CMAKE_SYSTEM_NAME STREQUAL FreeBSD)
-    list(APPEND libdispatch_ldflags -Xlinker;-rpath;-Xlinker;${FOUNDATION_PATH_TO_LIBDISPATCH_BUILD}/src)
+    list(APPEND libdispatch_ldflags -Xlinker;-rpath;-Xlinker;${FOUNDATION_PATH_TO_LIBDISPATCH_BUILD}/src;-Xlinker;-rpath;-Xlinker;${FOUNDATION_PATH_TO_LIBDISPATCH_BUILD})
   endif()
 endif()