Eliminate TODO and FIXME macros

Those macros are legacy and are not used consitently throughout the
code base. This patch eliminates their definitions and rewrites
their remaining occurrences to TODO comments.

All occurrences have been checked and made sure that the comments
used a consistent style.

JerryScript-DCO-1.0-Signed-off-by: Akos Kiss akiss@inf.u-szeged.hu

jerry-core/ecma/base/ecma-gc.c

@@ -39,10 +39,7 @@
 #define JERRY_INTERNAL
 #include "jerry-internal.h"
 
-/**
- * TODO:
- *      Extract GC to a separate component
- */
+/* TODO: Extract GC to a separate component */
 
 /**
  * An object's GC color

jerry-core/ecma/base/ecma-helpers-conversion.c

@@ -339,7 +339,7 @@ ecma_number_t
 ecma_utf8_string_to_number (const lit_utf8_byte_t *str_p, /**< utf-8 string */
                             lit_utf8_size_t str_size) /**< string size */
 {
-  TODO (Check license issues);
+  /* TODO: Check license issues */
 
   const lit_utf8_byte_t dec_digits_range[10] = { '0', '9' };
   const lit_utf8_byte_t hex_lower_digits_range[10] = { 'a', 'f' };