Added as_bytes_get_int32_var() for variable 7-bit decoding.
Add as_bytes_set_var_int().
Rename as_bytes_get_int32_var() to as_bytes_get_var_int().
AER-2678 - make sure as_list_val_tostring_foreach() handles a null value.
Also fix nil check in as_map_val_tostring_foreach().
Add Validation of the "map" Parameter and Proper Failure Case Return Values Where Missing.
Functions to calculate expected encode/decode length of a string
Reverted unnecessary base64 additions.
Minor optimization in as_bytes_get_var_int()