Split up parser.c; errors.pod from c dir; cleanup of makefile.

Bad targets in makefiles cleaned up.

"errors.pod" now made with "errors.c" and "errors.h" from
"errors.txt". Removed old directory with C program for making it.

Split "parser.c" into testing file "parser-test.c" and functional file
"parser.c".

Change "json_argo.c" to "json-parse-perl.c" and remove bad make
targets from "makeitfile".