devel/skalibs: update to version 2.14.4.0
Changes from 2.14.3.0:
- Bugfixes.
- Documentation fixes. (This file, in particular.)
- New functions: buffer_timed_getv, buffer_timed_putv, timed_read, timed_readv, timed_Write, timed_writev
- New sysdeps, better handling of variable sysdeps
- New functions: sagetexecname, tain_addmsec, millisleep