* symfile.c (build_id_to_debug_filename): New variable debugdir. Move
variables size, s and data into a new inner block. Change xmalloc for
alloca, use direct BUILDID->SIZE there now. Loop for the
DEBUG_FILE_DIRECTORY components.
(find_separate_debug_file): New variable debugdir and debugdir_end.
Loop for the DEBUG_FILE_DIRECTORY components.
(_initialize_symfile): For "debug-file-directory" use plural and note
one can use multiple components now.
gdb/doc/
* gdb.texinfo (set debug-file-directory, show debug-file-directory)
(Auto-loading): Use plural and note one can use multiple components now.
gdb/testsuite/
* gdb.base/sepdebug.exp: New test_different_dir call for multiple-dirs.
