Creates a new #GString, with enough space for @dfl_size bytes. This is useful if you are going to add a lot of text to the string and don't want it to be reallocated too often.
the default size of the space allocated to hold the string
Return: the new #GString
See Implementation
Creates a new #GString, with enough space for @dfl_size bytes. This is useful if you are going to add a lot of text to the string and don't want it to be reallocated too often.