Changes maximum stacktrace string values to better allow for inclusion of values up to PATH_MAX. I don't like it. The values are huge. Need a better more sensible way.

include/akerror.tmpl.h

@@ -6,13 +6,19 @@
 #include <stdbool.h>
 #include <string.h>
 #include <stdio.h>
+#include <limits.h>
 #endif
 
-#define AKERR_MAX_ERROR_CONTEXT_STRING_LENGTH              1024
+// FIXME: This is huge now. It used to be 1000 bytes, then I wanted to report errors
+// related to filesystem paths, which made it grow beyond PATH_MAX, then I started
+// reporting messages including 2 file paths (PATH_MAX * 2), so now to make the compiler warnings
+// shut up, it's enormous (PATH_MAX*3).
+#define AKERR_MAX_ERROR_CONTEXT_STRING_LENGTH              12384
+
 #define AKERR_MAX_ERROR_NAME_LENGTH                        64
-#define AKERR_MAX_ERROR_FNAME_LENGTH                       256
+#define AKERR_MAX_ERROR_FNAME_LENGTH                       PATH_MAX
 #define AKERR_MAX_ERROR_FUNCTION_LENGTH                    128
-#define AKERR_MAX_ERROR_STACKTRACE_BUF_LENGTH              2048
+#define AKERR_MAX_ERROR_STACKTRACE_BUF_LENGTH              (AKERR_MAX_ERROR_CONTEXT_STRING_LENGTH + AKERR_MAX_ERROR_NAME_LENGTH + AKERR_MAX_ERROR_FNAME_LENGTH + AKERR_MAX_ERROR_FUNCTION_LENGTH + 16)
 
 #define AKERR_LAST_ERRNO_VALUE      AKERR_LAST_ERRNO_VALUE_SED