Optimize ef_write_block function: The function did single byte writing until a start of a page was detected. Only in that case a multi byte write was used. According to the manual page write is not limited to 256 byte. Multiple bytes may be written until the end of the page is reached => Changed implementation to always use multi byte writes which increases the performance of the write block function

Heinrichs Weikamp OSTC4 update files.

The builds are for testing purposes only. Be careful, they might not work and are definitely not recommended for real dives.