Removing exit calls from config parser

* config.h: cleanup, left only internally needed definitions
* config.c: removed exit calls, use yyerror and yywarning
* config_gram.y: (Dito.)
* lexer.l: (Dito.)
* libavrdude.h: removed internal definitions of config parser
* main.c: removed yyerror, it is now in config.c
* jtagmkII.c: added missing free in error case
* pgm.c: replaced exits by returns
* pickit2.c: add missing return



git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@1322 81a1dc3b-b13d-400b-aceb-764788c761c2

main.c

@@ -71,11 +71,6 @@ int avrdude_message(const int msglvl, const char *format, ...)
     return rc;
 }
 
-int yyerror(char * errmsg)
-{
-  avrdude_message(MSG_INFO, "%s: %s at %s:%d\n", progname, errmsg, infile, lineno);
-  exit(1);
-}
 
 struct list_walk_cookie
 {