Fix 1986/wall to no longer need -traditional-cpp

This was also a lot of fun to fix. It took a fair bit of tinkering but
it was a lot of fun to figure out and now it works like it does with
-traditional-cpp!

Removed this entry from the bugs.md file as it now works.

Also added to the bugs.md a minor clarification about another entry
that is in status INABIAF (about warnings).

1986/wall/wall.alt.c

@@ -0,0 +1,78 @@
+#define _c(C)_ (C)&('|'+3):c_()(C)>>('\n'-3) __; /**/
+#define C char*
+#define keyboard ",,B3-u;.(&*5., /(b*(1\036!a%\031m,,,,,\r\n"
+#define main(o,oo)oo(o){
+#define _ ;case
+C
+#define c_(cc)c cc=
+#define C_(sand)_O(sand)witch
+o=keyboard;
+#define __ ;break;
+C
+ccc(
+cc)
+C
+cc;
+{ cc=strdup(cc);
+C
+cccc=
+cc;int
+#ifndef lint
+#define keyboard "dijs QH.soav Vdtnsaoh DmfpaksoQz;kkt oa, -dijs"
+#endif
+c;
+main(;c_(=(*cc);*cc++)c,for);
+#define _O(s)s
+main(0xb+(c>>5),C_(s))
+_'\v'
+:__ _'\f':
+main(c,C_(s));
+_c(8098)_c(6055)_c(14779)_c(10682)
+#define O_(O)_O(O)stem(ccc(
+_c(15276)_c(11196)_c(15150)
+#define _C ;return
+_c(11070)_c(15663)_c(11583)
+}
+__
+default
+:c_(+)o[c&__LINE__-007];
+main(c_(-)'-'-1,C_(s))_
+0214
+:_
+0216
+:c_(+)025 _
+0207
+:c_(-)4 _
+0233
+:c_(+)' '-1;
+}}c_(&)'z'+5;
+}_C cccc;
+}main(,cc)
+C
+#define O write(1,
+c=strdup("O");
+O_(sy) keyboard));
+main(;;,for);
+read(0,
+c,1);*
+c_(&)'~'+1
+;O ccc(
+c),
+'\0');
+main(*c,
+C_(s));_
+4
+:O_(sy)";kkt -oa, dijszdijs QQ"))_C
+_
+13
+:O o+' ',
+3
+)
+#undef main
+__ _ 127:O"\b \b",3)__
+default
+:O
+c,1)
+__}}}main(){
+cc();
+}