hevc: Use a regular configurationVersion.

Now, 14496-15 3rd ed. was finalized and published, so it established the compatibility of the structure of the decoder configuration.
muxer: Re-enable HEVC muxing.

Remove the restriction to use for testing and experimental purposes only.
public header: Fix two typos in comments about lsmash_codec_specific_data_t.
public header: Update micro ver. because of regular HEVC support.
Define macros of endian memory reader/writer.
timeline: Fix a wrong increment to get ctd_shift.
box: Add a precaution about undefined behavior of XXXX_BOX_TYPE_YYYY.user.id .
box: Use compound literal to convert 4-byte integer into NULL-terminated string.
box: Make consistent with return type of box constructor functions.
box: Rename CHECK_LARGESIZE into UPDATE_BOX_SIZE_COMMON_PROCESS.

The previous name of the macro is improper.
box: Simplify update of box size by using a fake bytestream writer.
box: Remove unused box size updaters.
box: Fix the timing of large size check when updating box size.
sample: More robust roll_distance decision for reordering.

Add comment about an approach to decide it.
box: Don't allocate cache for track when constructing 'traf'.

'traf' takes over the cache from 'trak'.
This fix a memory leak.
box: More macros to simplify box constructor functions.
box: Rename item_list, a member of 'ilst', into metaitem_list.
sample: Support AudioPreRollEntry.
box: Avoid using Statements and Declarations in Expressions.

This feature is an extension of some compilers and not included in C99.

Also cosmetics in isom_update_box_size().
sample: Avoid referencing uninitialized pointers.