Various bug/format fixes in 1992/adrian

The default file to open in the code did not exist: it was submitted as
adgrep.c but the judges changed the entry to be adrian.c. The adgrep is
a link to adrian but adgrep.c does not exist. Instead of changing it to
be adrian.c, however, I changed it to __FILE__.

If the file cannot be opened it no longer will segfault. This is the
only crash that was fixed; two are explicitly noted by the author as
features though it could possibly be implied that the same goes for the
entry itself.

The bugs.md has had some bugs that seem to be genuine bugs that might
want to be fixed and it also has had features added, things that should
not be fixed (including adsleep and adbasename crashing if no arg
specified).

The README.md file was typo/format checked/fixed.

The Makefile had several fixes, most importantly that now running 'make'
will link adgrep as it's now a target.

The thanks file has been updated as well as various things have, as
noted above, changed.

bugs.md

@@ -707,6 +707,59 @@ when you're cheating it ends up winning! Can you figure that out as well?
 
 # 1992
 
+## 1992 adrian
+
+### STATUS: known bug - please help us fix
+### Source code: [1992/adrian/westley.c](1992/westley/westley.c)
+### Information: [1992/adrian/README.md](1992/westley/README.md)
+
+The author states that:
+
+```
+If the input contains errors, then an error message along
+with the number of the offending line will be printed to stderr.  The
+number of rules for each state is limited to 17.  If more than 17 rules
+are present, you get the error 'too_many_rules', and the state that was
+being processed is printed.  Error 'no_destination' occurs if you specify a
+set of characters, but no destination state, and error 'too_many_states'
+occurs if your automaton has more than 257 states.
+```
+
+but only `no_destination` appears to occur. It is possible that this is invalid
+test cases but it's also possible it simply is a bug.
+
+You are welcome to try and fix these problem(s).
+
+
+### STATUS: INABIAF - please **DO NOT** fix
+### Source code: [1992/adrian/westley.c](1992/westley/westley.c)
+### Information: [1992/adrian/README.md](1992/westley/README.md)
+
+The author stated that if the file cannot be opened then it will print a system
+error but this is not the case unless it's showing a fault. However this was
+instead fixed by Cody as part of another problem that was detected so that the
+program just exits 1 if the file cannot be opened.
+
+Also, if _some_ of the programs are not given an arg they will very likely crash
+or do something funny. For instance `adsleep` and `adbasename`. This is very
+simple to fix but the author explicitly noted that this will segfault and it is
+that that is the error message.
+
+Another thing is that the code:
+
+```c
+printf((W,Y));
+```
+
+appears to be wrong because `W` is a `FILE *` and `Y` is a `char[]` but if one
+changes it to use `fprintf()` on the file (which, incidentally, is opened in
+read only mode which is another reason) with the `%s` specifier it will make
+`adhead` not work: it'll print nothing at all! So this code should not be
+changed either even if it appears to be wrong. Notice too a curious thing: if
+you did change it to fprintf, even if you have the right number of args, you'd
+have to remove the outer `()` pair.
+
+
 ## 1992 gson
 
 ### STATUS: uses gets() - change to fgets() if possible