[Reduction] #274-323: xx.cpp

Yup. 50 functions in a single module, totalling 12,633 bytes, used in all 15
game executables, and no references to any of that in the remaining game code.

[Binary change]
* Order of 3 relocations in all of THO3, TH04 and TH05, TH02's MAIN.EXE and
  MAINE.EXE, and TH01's OP.EXE and FUUIN.EXE
* Order of 2 relocations in TH02's OP.EXE and TH01's REIIDEN.EXE
* Inserts a new relocation into TH03's MAIN.EXE

libs/BorlandC/xx[bss].asm

@@ -0,0 +1,4 @@
+xx_131A0	dd ?
+xx_131A4	dd ?
+xx_131A8	db    ?	;
+xx_131A9	db    ?	;

libs/BorlandC/xx[data].asm

@@ -0,0 +1,2 @@
+aNotype		db '<notype>',0
+aBccxh1		db '**BCCxh1',0