minor fixes

NOTE :
Now "electric-case-criteria" takes 3 arguments.
If you are using your own "electric-case-criteria", you should modify
it.
added ahk-mode settings

NOTE :
electric-case-cc-convert-calls is now renamed to
electric-case-convert-calls
added scala-mode settings, and refactord
fixes, improvements
added "pending-overlay"
added pending-overlay
fixes, improvements

NOTE:
electric-case-mode-map, electric-case-convert-calls are no longer exist
minor fixes
modified description
removed trigger command from post-command-hook
fixes
fixes and improvements

NOTE:
electric-case-convert-XXX default to nil
added customize variables
deleted a part of description
improved behavior
fixed
minor fix for Java annotation