build: always update *.a symbol table (re: 57f51b6)

POSIX specifies that the act of adding or deleting *.o object files
to *.a library archives automatically updates the symbol table. But
on some older systems (particularly Mac OS X 10.3.7 on my
museum-grade PowerMac G5), this still needs to be done manually.

src/cmd/INIT/include/link_ar.mam:
- Invoke 'ar -s' after making any changes to a library archive;
  this is the equivalent of the obsolete 'ranlib' invocation to
  force updating the symbol table.

src/*/*/Mamfile:
- Remove obsolete ranlib invocations when installing. These should
  not be needed when copying an archive whose symbol table is known
  to be up to date.

src/cmd/INIT/include/link_ar.mam

@@ -33,8 +33,13 @@ exec -			esac
 exec -			;;
 exec -		esac
 exec -	done
+exec -	set -x
 exec -	case ${to_delete:+y} in
-exec -	y)	set -x
-exec -		%{AR} -d %{@} $to_delete
+exec -	y)	%{AR} -d %{@} $to_delete
 exec -		;;
 exec -	esac
+
+note *	Some old systems do not automatically update the symbol table upon ad
+note *	adding or deleting object files (contra POSIX), so update it manually
+
+exec -	%{AR} -s %{@}

src/cmd/ksh93/Mamfile

@@ -1167,8 +1167,7 @@ make install virtual
 	done
 	make %{INSTALLROOT}/lib/libshell.a
 		prev libshell.a
-		exec - cp -f %{<} %{@} || exit
-		exec - ranlib %{@} >/dev/null 2>&1 || true
+		exec - cp -f %{<} %{@}
 	done
 	loop MAN3PG shell nval
 		make %{INSTALLROOT}/man/man3/%{MAN3PG}.3

src/lib/libast/Mamfile

@@ -4497,8 +4497,7 @@ make install virtual
 	note * the library and dependency information
 	make %{INSTALLROOT}/lib/libast.a
 		prev libast.a
-		exec - cp -f %{<} %{@} || exit
-		exec - ranlib %{@} >/dev/null 2>&1 || true
+		exec - cp -f %{<} %{@}
 	done
 	make %{INSTALLROOT}/lib/lib/ast
 		prev ast.req

src/lib/libcmd/Mamfile

@@ -332,8 +332,7 @@ make install virtual
 	done
 	make %{INSTALLROOT}/lib/libcmd.a
 		prev libcmd.a
-		exec - cp -f %{<} %{@} || exit
-		exec - ranlib %{@} >/dev/null 2>&1 || true
+		exec - cp -f %{<} %{@}
 	done
 	make %{INSTALLROOT}/lib/lib/cmd
 		prev cmd.req

src/lib/libdll/Mamfile

@@ -131,8 +131,7 @@ make install virtual
 	done
 	make %{INSTALLROOT}/lib/libdll.a
 		prev libdll.a
-		exec - cp -f %{<} %{@} || exit
-		exec - ranlib %{@} >/dev/null 2>&1 || true
+		exec - cp -f %{<} %{@}
 	done
 	make %{INSTALLROOT}/lib/lib/dll
 		prev dll.req

src/lib/libsum/Mamfile

@@ -78,8 +78,7 @@ make install virtual
 	done
 	make %{INSTALLROOT}/lib/libsum.a
 		prev libsum.a
-		exec - cp -f %{<} %{@} || exit
-		exec - ranlib %{@} >/dev/null 2>&1 || true
+		exec - cp -f %{<} %{@}
 	done
 	make %{INSTALLROOT}/lib/lib/sum
 		prev sum.req