* Update build systems: autotools, raw win32 makefiles, Code::Blocks project and MSVC project
* Rename _droid and _base_object forward declaration types to DROID and BASE_OBJECT respectively
* Add two forward declarations for BASE_OBJECT and DROID to scriptfuncs.h so that it can declare pointers to these types
* src/messagedef.h depends on lib/ivis_common/ivisdef.h and src/positiondef.h so #include those
* Don't #include stuff from src/ in lib/script/chat_processing.h
* Remove all unnecessary #inlucdes from src/ from lib/script/chat_lexer.l
NOTE: Build systems not mentioned above might need updating.
git-svn-id: svn+ssh://svn.gna.org/svn/warzone/trunk@5531 4a71c877-e1ca-e34f-864e-861f7616d084