Call the version GST_MAGIC_BINARY_VERSION_STR to be more consistent and add it to...

Call the version GST_MAGIC_BINARY_VERSION_STR to be more consistent and add it to the (private part) of the docs to f...

Original commit message from CVS:
* docs/gst/gstreamer-sections.txt:
* gst/gstregistrybinary.c: (gst_registry_binary_initialize_magic),
(gst_registry_binary_check_magic):
* gst/gstregistrybinary.h:
Call the version GST_MAGIC_BINARY_VERSION_STR to be more consistent
and add it to the (private part) of the docs to fix the build.