Build for ITS, and fix broken ITS/TENEX conditionals.

src/mudsys/agc.142

@@ -489,7 +489,7 @@ PURCLS:	MOVE	P,[-2000,,MRKPDL]
 	MOVE	A,INF3		; GET PTR TO PURIFIED STRUCTURE
 	SKIPN	NPRFLG
 	PUSHJ	P,%PURIF	;  PURIFY
-	PUSHJ	P,%PURMD
+IFE ITS,	PUSHJ	P,%PURMD
 
 	SETZM	GPURFL
 	JRST	EPURIF		; FINISH UP

src/mudsys/interr.426

@@ -1028,6 +1028,7 @@ RETRLT:	MOVE	A,(AB)
 TIMERR:	MOVNI	A,1
 	PUSHJ	P,TGFALS
 	JRST	FINIS
+]
 	
 RLTPER:	SKIPGE	B,RLTSAV
 	 JRST	IFALSE
@@ -1583,7 +1584,7 @@ IFE ITS,	PUSHJ	P,TGFALS
 
 DIRQ1:	SUB	TP,[6,,6]
 	JRST	DIRQ
-]
+
 ; HANDLE INFERIOR KNOCKING AT THE DOOR
 
 HINF:

src/mudsys/ldgc.101

@@ -481,6 +481,7 @@ ILDBLK:	SIXBIT /  &DSK/
 ]
 
 
+IFE ITS,[
 NDEBUG:	SETZM	GCDEBU
 	CAIA
 DEBUGC:	SETOM	GCDEBU
@@ -489,6 +490,7 @@ DEBUGC:	SETOM	GCDEBU
 	CLOSF
 	JFCL
 	POPJ	P,
+]
 
 IMPURE
 GCDEBU:	0

src/mudsys/mappur.163

@@ -337,6 +337,7 @@ FXUPGO:	MOVE	A,(TP)		; pointer to them
 IFE ITS,[
 	SKIPN	MULTSG
 	 JRST	FIXMLT
+]
 	HRRZ	D,B		; this codes gets us running in the correct
 				;	segment
 	ASH	D,PGSHFT
@@ -559,8 +560,11 @@ IFE ITS,[
 	MOVEM	0,P.TOP
 	POPJ	P,
 
-EPOPJ:	SKIPE	MULTSG
+EPOPJ:	
+IFE ITS,[
+	SKIPE	MULTSG
 	 POP	P,E
+]
 	POPJ	P,
 IFE ITS,[
 GETPAX:	TDZA	B,B		; here if other segs ok

src/mudsys/muddle.347

@@ -335,7 +335,7 @@ NIL"=0	;END OF LIST MARKER
 
 IF1 [
 DEFINE SYSQ
-	ITS==0
+	ITS==1
 ;	IFE <<<.AFNM1>_-24.>-<SIXBIT /    T./>>,ITS==0
 	IFN ITS,[PRINTC /ITS VERSION
 /]

src/mudsys/mudsqu.29

@@ -78,6 +78,7 @@ ATOSQ:	PUSH	P,B
 IFE ITS,[
 	SKIPE	MULTSG
 	 PUSHJ	P,@[.+1]	; RUN IN 0
+]
 	MOVE	A,SQUPNT	; GET TABLE POINTER
 	MOVE	B,[2,,2]
 	CAMN	E,1(A)

src/mudsys/nfree.54

@@ -4,6 +4,7 @@ TITLE MODIFIED AFREE FOR MUDDLE
 RELOCATABLE
 
 .INSRT MUDDLE >
+SYSQ
 
 .GLOBAL CAFREE,CAFRET,PARNEW,AGC,PARBOT,CODTOP,CAFRE1
 .GLOBAL STOGC,STOSTR,CAFRE,ISTOST,STOLST,SAT,ICONS,BYTDOP
@@ -139,7 +140,7 @@ CLOOP:	CAMG	A,(C)		; skip if not big enough
 
 CHAVIT:	MOVE	C,CODTOP
 	MOVE	E,PARBOT
-	PUSHJ	P,%CLNCO	; flush extra pages
+IFE ITS,	PUSHJ	P,%CLNCO	; flush extra pages
        	MOVE	E,PARBOT	; find amount obtained
 	SUBI	E,1		; dont use a real pair
 	MOVEI	C,(E)		; for reset of CODTOP

src/mudsys/readch.215

@@ -1359,7 +1359,7 @@ IFE ITS,[
 IMGOK:	MOVE	B,IMAGFL
 	EXCH	A,B
 	BOUT
-
+]
 
 IMGEXT:	MOVSI	A,TFIX
 	JRST	MPOPJ

src/mudsys/utilit.106

@@ -416,9 +416,11 @@ AGC1:	SKIPE	NPWRIT
 	EXCH	P,GCPDL
 	SKIPE	SWAPGC
 	JRST	IAMSGC
-	SKIPN	MULTSG
-	JRST	IAGC
+IFE ITS,[
+	SKIPE	MULTSG
 	JRST	ISECGC
+]
+	JRST	IAGC
 
 AAGC:	SETZM	SWAPGC
 	EXCH	P,GCPDL

src/mudsys/uuoh.184

@@ -927,6 +927,7 @@ IFE ITS,[
 	MOVE	0,UUOH
 	SKIPE	MULTSG
 	 MOVE	0,MLTPC
+]
 	PUSH	P,0
 	ANDI	0,-1
 	PUSH	P,UUOLOC	; SAVE UUO
@@ -991,8 +992,11 @@ LOPPOP:	POP	TP,ACSAV-1(B)
 LOPBAR:	SUB	TP,C%11
 LOPFOO:	SOJG	B,LOPPOP
 	JUMPE	R,LOPBLT		; OK, NOT RSUBR
+IFE ITS,[
 	SKIPL	1(R)		; NOT PURE RSUBR
 	 SKIPN	MULTSG
+]
+IFN ITS,	SKIPN	1(R)		; NOT PURE RSUBR
 	  JRST	LOPBLT
 
 	MOVE	B,M