- Fixed: deadthings.txt contained a superfluous ';' which created parsing errors

with my changed code.
- Cleaned up DECORATE parser a little - moved the old style parsing code into its 
  own file and rearranged a few things.
- Made ProcessStates non-static so that it doesn't need to be passed as an argument
  to all functions in the DECORATE parser.
- Moved DECORATE parser files into their own subdirectory.
- Optimization: SC_GetToken no longer sets sc_name for identifiers. In most cases
  this creates needless overhead by adding a potentially unneeded name to the name
  table and looking up the name. In almost all cases where a name is needed it's as
  easy to assign sc_String to the name variable.
- Added enum definitions to DECORATE.


SVN r537 (trunk)

src/thingdef_codeptr.cpp

@@ -63,7 +63,7 @@
 #include "vectors.h"
 #include "a_sharedglobal.h"
 #include "a_doomglobal.h"
-#include "thingdef.h"
+#include "thingdef/thingdef.h"
 #include "v_video.h"