All 1990 entries now compile!

My first 41st, 51st and 29th (all depending on the base) birthday
updates (possibly more will follow but this is not a certainty). All the
1990 entries now compile!

In one we used a patch from Yusuke Endoh (thank you Yusuke!) which we
credited him in the README and in another we used a tip from him (use
-ansi at the compiler line) to get the other to compile (again, thank
you Yusuke!). We fixed the others. In the case of 1990/tbr/tbr.c the
author had supplied a shorter version and we fixed that one too.

Added 1990/.gitignore which has the built files of 1990 so that after
doing `cd 1990 ; make all' running `git status .' will not show any
untracked files.

1990/dg/README.md

@@ -18,16 +18,18 @@
 
 ## Judges' comments
 
-    Some C preprocessors get confused about single quotes in certain cases.
+    Some C preprocessors got confused about single quotes in certain cases.
     In particular, the following source line:
 
-       Cb12(ase(bco(acp(bi(acp(bcp(acp(bpl(aqu(bqu(A))))))))))))))))))))))))))))))
+       b12(ase(bco(acp(bi(acp(bcp(acp(bpl(aqu(bqu(A))))))))))))))))))))))))))))))
 
-    may need to be changed to:
+    sometimes has to be changed to:
 
-       Cb12(ase(bco(acp(bi(acp(bcp(acp(bpl('A'))))))))))))))))))))))))))))
+       b12(ase(bco(acp(bi(acp(bcp(acp(bpl('A'))))))))))))))))))))))))))))
+
+    if the C preprocessor botches single quotes in cpp expansions, which we have
+    done for the wider audience.
 
-    if your C preprocessor botches single quotes in cpp expansions.
 
 ## Author's comments
 

1990/dg/dg.c

@@ -1,69 +1,67 @@
 #include <stdio.h>
 
-#define d define
-
-#d b12(x) 12 x
-#d a13(x) x 13
-#d a16(x) x 16
-#d a32(x) x 32
-#d acb(x) x]
-#d acc(x) x}
-#d aco(x) x:
-#d bco(x) :x
-#d acp(x) x)
-#d bef(x) EOF x
-#d aeq(x) x=
-#d afo(x) x for
-#d age(x) x fgetc
-#d asi(x) x stdin
-#d aso(x) x stdout
-#d bgt(x) >x
-#d ai(x) x i
-#d aj(x) x j
-#d al(x) x l
-#d ami(x) x-
-#d bne(x) !=x
-#d aob(x) x[
-#d aop(x) x(
-#d apl(x) x+
-#d bpu(x) fputc x
-#d bqm(x) ?x
-#d aqm(x) x?
-#d aqu(x) x'
-#d ase(x) x;
-#d awh(x) x while
-#d axo(x) x^
-#d a0(x) x 0
-#d b13(x) 13 x
-#d b16(x) 16 x
-#d b19(x) 19 x
-#d b48(x) 48 x
-#d a64(x) x 64
-#d b66(x) 66 x
-#d bcb(x) ]x
-#d bch(x) char x
-#d bcm(x) ,x
-#d acm(x) x,
-#d bcp(x) )x
-#d beq(x) =x
-#d bex(x) extern x
-#d bi(x) i x
-#d bin(x) int x
-#d bix(x) index x
-#d bj(x) j x
-#d bl(x) l x
-#d alt(x) x<
-#d bma(x) main x
-#d bob(x) [x
-#d boc(x) {x
-#d bop(x) (x
-#d bpl(x) +x
-#d app(x) x++
-#d bqu(x) 'x
-#d bse(x) ;x
-#d bst(x) *x
+#define b12(x) 12 x
+#define a13(x) x 13
+#define a16(x) x 16
+#define a32(x) x 32
+#define acb(x) x]
+#define acc(x) x}
+#define aco(x) x:
+#define bco(x) :x
+#define acp(x) x)
+#define bef(x) EOF x
+#define aeq(x) x=
+#define afo(x) x for
+#define age(x) x fgetc
+#define asi(x) x stdin
+#define aso(x) x stdout
+#define bgt(x) >x
+#define ai(x) x i
+#define aj(x) x j
+#define al(x) x l
+#define ami(x) x-
+#define bne(x) !=x
+#define aob(x) x[
+#define aop(x) x(
+#define apl(x) x+
+#define bpu(x) fputc x
+#define bqm(x) ?x
+#define aqm(x) x?
+#define aqu(x) x'
+#define ase(x) x;
+#define awh(x) x while
+#define axo(x) x^
+#define a0(x) x 0
+#define b13(x) 13 x
+#define b16(x) 16 x
+#define b19(x) 19 x
+#define b48(x) 48 x
+#define a64(x) x 64
+#define b66(x) 66 x
+#define bcb(x) ]x
+#define bch(x) char x
+#define bcm(x) ,x
+#define acm(x) x,
+#define bcp(x) )x
+#define beq(x) =x
+#define bex(x) extern x
+#define bi(x) i x
+#define bin(x) int x
+#define bix(x) index x
+#define bj(x) j x
+#define bl(x) l x
+#define alt(x) x<
+#define bma(x) main x
+#define bob(x) [x
+#define boc(x) {x
+#define bop(x) (x
+#define bpl(x) +x
+#define app(x) x++
+#define bqu(x) 'x
+#define bse(x) ;x
+#define bst(x) *x
  
 bma(acp(bop(app(bcp(ai(boc(ase(bch(a16(bl(alt(bob(ai(b66(ase(bcb(a0(bcm(aeq(bst(acb(bj(a64(bse(aob(bin(al(bi(aeq(bse(ai(bex(aop(bch(afo(bst(ase(bix(())))))))))))))))))))))))))))))))))))))))
 bl(ai(bob(aob(bi(al(bcb(aop(beq(apl(b13(a13(bpl(aeq(bop(acb(bl(bob(a32(bi(bpl(apl(b16(bcb(ai(beq(b19(aob(bpl(bop(l))))))))))))))))))))))))))))))
-bpl(acp(b48(acp(asi(bcb(aop(beq(age(bop(aeq(bi(ai(bgt(aop(b12(aop(bqm(awh(b12(ase(bco(acp(bi(acp(bcp(acp(bpl(aqu(bqu(A))))))))))))))))))))))))))))))
+bpl(acp(b48(acp(asi(bcb(aop(beq(age(bop(aeq(bi(ai(bgt(aop(b12(aop(bqm(awh(b12(ase(bco(acp(bi(acp(bcp(acp(bpl('A'))))))))))))))))))))))))))))
 bne(acc(bef(ase(bcp(acp(aso(bpu(acm(ai(bop(aco(bop(acb(bj(al(beq(ami(bix(aj(axo(bop(a16(aob(bl(al(aqm(bcm(acp(acp(i))))))))))))))))))))))))))))))