Try to suppress spurious Mac ld warnings (lib/release/Release dir).

Mindful that some autobuild packages populate only packages/lib/release
(rather than packages/lib/debug), Linking.cmake always appends
packages/lib/release to CMake's link_directories() directive. But since CMake
always appends CMAKE_BUILD_TYPE to those directories, we end up with a phantom
packages/lib/release/Release directory on the search path. This would be
harmless except that the Mac's 'ld' command produces a warning. These warnings
quickly make TC's "Important Messages" output useless. Try appending
packages/lib/release only when the build type isn't already Release.

indra/cmake/Linking.cmake

@@ -13,7 +13,7 @@ elseif (LINUX)
   set(EXE_STAGING_DIR ${CMAKE_BINARY_DIR}/sharedlibs/bin)
 elseif (DARWIN)
   set(SHARED_LIB_STAGING_DIR ${CMAKE_BINARY_DIR}/sharedlibs)
-  set(EXE_STAGING_DIR "${CMAKE_BINARY_DIR}/sharedlibs/\$(CONFIGURATION)")
+  set(EXE_STAGING_DIR "${CMAKE_BINARY_DIR}/sharedlibs")
 endif (WINDOWS)
 
 # Autobuild packages must provide 'release' versions of libraries, but may provide versions for
@@ -33,7 +33,14 @@ else(WINDOWS OR DARWIN)
   set(AUTOBUILD_LIBS_INSTALL_DIRS ${AUTOBUILD_INSTALL_DIR}/lib/${CMAKE_BUILD_TYPE_LOWER})
 endif(WINDOWS OR DARWIN)
 
-list(APPEND AUTOBUILD_LIBS_INSTALL_DIRS ${ARCH_PREBUILT_DIRS_RELEASE})
+if (NOT "${CMAKE_BUILD_TYPE}" STREQUAL "Release")
+  # When we're building something other than Release, append the
+  # packages/lib/release directory to deal with autobuild packages that don't
+  # provide (e.g.) lib/debug libraries.
+  list(APPEND AUTOBUILD_LIBS_INSTALL_DIRS ${ARCH_PREBUILT_DIRS_RELEASE})
+  message(STATUS "CMAKE_BUILD_TYPE = ${CMAKE_BUILD_TYPE}, extending AUTOBUILD_LIBS_INSTALL_DIRS")
+endif (NOT "${CMAKE_BUILD_TYPE}" STREQUAL "Release")
+message(STATUS "For ${CMAKE_BUILD_TYPE}, AUTOBUILD_LIBS_INSTALL_DIRS: ${AUTOBUILD_LIBS_INSTALL_DIRS}")
 link_directories(${AUTOBUILD_LIBS_INSTALL_DIRS})
 
 if (LINUX)