[MacPorts] #61380: samba4 upgrade to 4.13.0

[MacPorts]

#61380: samba4 upgrade to 4.13.0
-------------------------+--------------------
 Reporter:  21stcaveman  |      Owner:  (none)
     Type:  enhancement  |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:
 Keywords:               |       Port:  samba4
-------------------------+--------------------
 I noticed samba4 has not been building for a long time. I just
 successfully built and ran v4.13.0 on MacOS Catalina (10.15.7), and want
 to share the fixes, in case they can be integrated for others to use. Here
 is a summary of changes :

 1. update Portfile, raise version to 4.13.0 with new checksums, add port
 python37 as a dependency
 2. apply a patch to change st_atim, st_ctim and st_mtim to mac compatible
 st_atimespec, st_ctimespec and st_mtimespec (patch-fix-st_atim.diff
 attached)
 3. apply a patch to disable build of docs on mac (patch-no-xsltproc.diff
 attached)

 Let me know if it is easier or more appropriate to create a github merge
 request for this, I am new to macports system.

-- 
Ticket URL: <https://trac.macports.org/ticket/61380>
MacPorts <https://www.macports.org/>
Ports system for macOS