- do not generate unless version<16.0 - never check checksum Fixes: #7220
Fixes #7222.
Part of #7045. Indicates that the .kmx file has additional header structure immediately following the COMP_KEYBOARD header. Used by KMXPlus file format for supporting LDML keyboards. Requires VERSION_160 or higher in keyboard file.
Fixes #7044. Groundwork for KMXPlus file format for LDML keyboard support.