Wishlist of library calls to be included in frosted-libc

[danielinux]

Missing symbols trying to compile busybox-1.24.1

• [x] chmod
• [x] chown
• [x] clearenv
• [x] dirname
• [x] fcntl
• [x] fnmatch
• [x] getpagesize
• [x] getsid
• [x] glob
• [x] globfree
• [x] lchown
• [x] major
• [x] malloc_trim
• [x] mallopt
• [x] minor
• [x] mknod
• [x] nanosleep
• [x] readlink
• [x] realpath
• [x] regcomp
• [x] regerror
• [x] regexec
• [x] regfree
• [x] rmdir
• [x] strverscmp
• [x] symlink
• [x] utimes

[brabo]

stubs have been added already, all returning -1 and errno == ENOSYS.

[maximevince]

:+1:

[danielinux]

This fixes compile issues in https://github.com/insane-adding-machines/frosted-busybox - closing.