Add DUK_USE_FATAL_MAXLEN option

config/config-options/DUK_USE_FATAL_MAXLEN.yaml

@@ -0,0 +1,8 @@
+define: DUK_USE_FATAL_MAXLEN
+introduced: 2.2.0
+default: 128
+tags:
+  - portability
+description: >
+  Maximum length of fatal error message string when error is thrown by
+  Duktape internals, in particular for uncaught errors.

config/examples/low_memory.yaml

@@ -21,6 +21,7 @@ DUK_USE_ERRCREATE: false
 DUK_USE_ERRTHROW: false
 DUK_USE_VERBOSE_ERRORS: false
 DUK_USE_PARANOID_ERRORS: true
+DUK_USE_FATAL_MAXLEN: 64
 DUK_USE_VERBOSE_EXECUTOR_ERRORS: false  # <100 bytes footprint
 DUK_USE_DEBUGGER_SUPPORT: false  # must be disabled if DUK_USE_PC2LINE is disabled
 DUK_USE_PC2LINE: false