Some CMake Cleanup

Clean up leftover SERVER and VIEWER from when they were a single tree
Fixed debian multiarch cmake
Small bits of OSX cleanup

indra/llvfs/CMakeLists.txt

@@ -41,12 +41,12 @@ if (LINUX)
   LIST(APPEND llvfs_SOURCE_FILES lldir_linux.cpp)
   LIST(APPEND llvfs_HEADER_FILES lldir_linux.h)
 
-  if (VIEWER AND INSTALL)
+  if (INSTALL)
     set_source_files_properties(lldir_linux.cpp
                                 PROPERTIES COMPILE_FLAGS
                                 "-DAPP_RO_DATA_DIR=\\\"${APP_SHARE_DIR}\\\""
                                 )
-  endif (VIEWER AND INSTALL)
+  endif (INSTALL)
 endif (LINUX)
 
 if (WINDOWS)