troff macros: change unix /usr/lib paths to plan9 /sys/lib and /usr/bin/col -> /bin/col

sys/lib/tmac/tmac.bits

@@ -1,6 +1,6 @@
 .ds Bf b		\" default format; use i for icons and faces
 .ds Bn /tmp/btroff\n($$	\" temporary file, reused on each macro call
-.ds Bp /usr/lib/btroff	\" bitmap filter
+.ds Bp /sys/lib/btroff	\" bitmap filter
 .de BM
 .if \\n(.$=1 .ds Bf \\$1
 .if \\n(.$=2 \{.	\" copy request, perhaps diverted

sys/lib/tmac/tmac.mcs

@@ -418,7 +418,7 @@
 .nr aa 1		\" set default to send cover to ITDS
 .ie !'\\n(.F'stdin' \{\
 .	ie !'\\n(.F'-' \{\
-.		sy /usr/lib/tmac/timestamp \\n(.F>/tmp/tp\\n($$
+.		sy /sys/lib/tmac/timestamp \\n(.F>/tmp/tp\\n($$
 .		so /tmp/tp\\n($$
 .		sy /bin/rm /tmp/tp\\n($$
 .		br \}			\" don't remove br - gets around troff bug
@@ -1991,7 +1991,7 @@ Internal Technical Document Service
 .if \\n(aa \{\
 .	sy pwd >/tmp/sx\\n($$
 .	sy sed "s/^/cd /" /tmp/sx\\n($$ >/tmp/sc\\n($$
-.	sy echo "/usr/lib/tmac/sendcover" \\n(.F \\n(qq >>/tmp/sc\\n($$
+.	sy echo "/sys/lib/tmac/sendcover" \\n(.F \\n(qq >>/tmp/sc\\n($$
 .	sy echo "rm" /tmp/sx\\n($$ /tmp/sc\\n($$>>/tmp/sc\\n($$
 .	sy sh /tmp/sc\\n($$&
 .	br \}

sys/lib/tmac/tmac.org

@@ -1,2 +1,2 @@
 '''\"	TMAC.ORG @(#)tmacs.src	1.7
-.so /usr/lib/macros/org
+.so /sys/lib/macros/org

sys/lib/tmac/tmac.s

@@ -106,7 +106,7 @@
 .if !\\n(IM .if !\\n(MN .pn 0
 .so \\*(sd/tmac.scover
 .if !\\n(IM .if !\\n(MN .rm IM MF MR
-.if n .if !\\n(.T .pi /usr/bin/col
+.if n .if !\\n(.T .pi /bin/col
 .nr ST 1
 .ds QF TECHNICAL MEMORANDUM
 .br

sys/lib/tmac/tmac.soft

@@ -631,7 +631,7 @@ the
 .UX
 operating system
 ..
-.so /usr/lib/tmac/tmac.sdisp
+.so /sys/lib/tmac/tmac.sdisp
 .de KF
 .if \\n(KK=0 .GS
 .nr KK 1