Merge pull request #158 from fdelapena/master

Remove lua bot files from Makefile.am
Add `subdir-objects` to configure.ac

See EasyRPG/Readers#47
Merge pull request #159 from ChrisOelmueller/patch-1

Add `subdir-objects` to configure.ac (fixes Automake 1.14 warnings and adds Automake 2.0 compatibility)