* config/amanda/amanda_configure.m4:
  s/AMANDA_REST_HOOK/AMANDA_EXTENSIONS_HOOK/
* config/amanda/rest-hook.m4: remove file
* perl/Amanda/Constants.pm.in.src:
  s/AMANDA_REST_HOOK/AMANDA_EXTENSIONS_HOOK/
* perl/Amanda/Rest/Amanda/bin/app.pl.in: Use REST_EXTENSIONS_DIR
* config/amanda/rest-extensions.m4: Copy of rest-hook.m4, rename
  AMANDA_REST_HOOK to AMANDA_EXTENSIONS_HOOK, define REST_EXTENSIONS_DIR
  instead of REST_HOOK_DIR.


git-svn-id: https://svn.code.sf.net/p/amanda/code/amanda/trunk@5882 a8d146d6-cc15-0410-8900-af154a0219e0