Commit support for paper-tape/TTY I/O in BALGOL and run-time.

1. Implement paper-tape/TTY versions of compiler INPUTMEDIA and
OUTPUTMEDIA routines, and the run-time REED and RITE routines.
2. Create Generator callout deck to make a compiler tape containing
paper-tape/TTY support.
3. Create a compiler tape containing paper-tape/TTY support.
4. Create a paper-tape compiler callout bootstrap program.
5. Correct address for NUMB in Generator source to match the address in
the compiler's Overlay module.
6. Create corrected Generator tape (must be used to create compilers
with paper-tape/TTY support).
7. Add option to produce Generator INPUTMEDIA/OUTPUTMEDIA object card
decks to BAC-Assembler and GEN-Assembler.
8. Create Xlate-Card-PT.wsf utility to convert card-image files to
retro-220 paper-tape image files.
9. Create paper-tape versions of example BALGOL programs.

software/BALGOL/BALGOL-Examples/Reference-Manual/Example-2/Example-2-Corrected.card

@@ -1,5 +1,5 @@
 2 COMMENT SECOND EXAMPLE PROGRAM FROM BALGOL MANUAL, MARCH 1963.
-2 THIS IS THE CORREECTED VERSION THAT COMPUTES AREA USING NORTH/SOUTH
+2 THIS IS THE CORRECTED VERSION THAT COMPUTES AREA USING NORTH/SOUTH
 2 RATHER THAN NORTH/SOUTH DISPLACEMENTS IN THE CALCULATION FOR -SUM-.
 2
 2 THE PROGRAM WHICH FOLLOWS IS ONE FOR SURVEY TRAVERSE CALCULATIONS;
@@ -77,7 +77,7 @@
 2   TOTALS (TMD, TCD, TCNS, TCEW, SQFT, ACRES);
 2 FORMAT
 2   F1 (*SURVEY*, I8, B5, *NUMBER OF LEGS*, I5, B5, *CLOSURE ERROR*,            *ADDED SPACING
-2       X9.2, W1, 
+2       X9.2, W1,
 2       *LEG*, B5, *ANGLE*, B7, *MEASURED*, B5, *CORRECTED*, B3,
 2       *NORTH-SOUTH    EAST-WEST*, W6,
 2       *NO.   DD MM SS Q     DISTANCE      DISTANCE  DISPLACEMENT *,