Improve fixes to 1998/schnitzi

The author stated that there was no 'if's and I have made it that way
now.

The author stated that the number should be > 0 && < 27 so I added the
range check (was previously != 0). Too high value could segfault and < 0
was problematic too. 27 itself was code that could not compile. Since
the program is so beautiful it had been decided to fix the problems
which is why these changes were added too.

The above was done like:

    ((V[1]&&((atoi(V[1])>0&&atoi(V[1])<27)||(exit(1),1))));

The try.sh script has been added to the entry to try out a lot of
commands instead of copy pasting it from the judges' remarks.

Removed duplicate INABIAF information from README.md (which is why the
other updates).

Updated bugs.md with more information to the features like how output
can end up being gigabytes in length depending on the number specified
to the program. Removed from the bugs.md details about warnings to
ignore as the compiler -Wno- options take care of that now. Extra
parentheses were added to the above to prevent another warning (I was
not sure if all compilers and versions had the -Wno- so I decided to fix
it in the code itself).

The try section has a question to ponder as well. The detail is also in
the bugs.md file.

1998/schnitzi/Makefile

@@ -40,7 +40,7 @@ include ../../var.mk
 #
 CSILENCE= -Wno-error -Wno-implicit-function-declaration -Wno-format-security \
 	-Wno-int-to-pointer-cast -Wno-int-conversion -Wno-unused-parameter \
-	-Wno-incompatible-pointer-types
+	-Wno-incompatible-pointer-types -Wno-implicit-int -Wno-unused-value
 
 # Common C compiler warning flags
 #