add UTIME_NOW and UTIME_OMIT constants for use in utimensat/futimens
add UTIME_NOW and UTIME_OMIT constants for use in utimensat/futimens

copied from lib/libc/include/generic-musl/sys/stat.h

raulgrell/zig,zig-lang/zig,andrewrk/zig,raulgrell/zig,andrewrk/zig,zig-lang/zig,raulgrell/zig,raulgrell/zig,zig-lang/zig,raulgrell/zig