Merge pull request #3925 from devnexen/ftransferextents_macos

fcntl add F_TRANSFEREXTENTS for macos.

Author: tgross35

Diff for: libc-test/semver/apple.txt

@@ -455,6 +455,7 @@ F_SPECULATIVE_READ
 F_TEST
 F_THAW_FS
 F_TLOCK
+F_TRANSFEREXTENTS
 F_TRIM_ACTIVE_FILE
 F_ULOCK
 F_UNLCK

Diff for: src/unix/bsd/apple/mod.rs

@@ -3591,6 +3591,7 @@ pub const F_PUNCHHOLE: ::c_int = 99;
 pub const F_TRIM_ACTIVE_FILE: ::c_int = 100;
 pub const F_SPECULATIVE_READ: ::c_int = 101;
 pub const F_GETPATH_NOFIRMLINK: ::c_int = 102;
+pub const F_TRANSFEREXTENTS: ::c_int = 110;
 
 pub const F_ALLOCATECONTIG: ::c_uint = 0x02;
 pub const F_ALLOCATEALL: ::c_uint = 0x04;