Replace -compile(export_all). with proper API exports

Cosmetic changes to -import(...). to avoid confusing indentation
engine.
Also export attach_loop/1 from distel.erl
Fix #34: Remove current-prefix-arg from erl-target-node
Merge pull request #35 from leoliu/fix-#34

Fix #34: Remove current-prefix-arg from erl-target-node
Merge pull request #33 from leoliu/master

Replace -compile(export_all). with proper API exports
Use add-hook for adding buffer-local hook

Replace edb-line-number with line-number-at-pos.
Remove mutual require between erl, derl and erl-service

Fix some buglets and compiler warnings.
Rename erl-search-function to erl-search-definition

and support searching type definitions.
Merge pull request #36 from leoliu/master

Cleanup, small improvements and remove mutual require