samba4: update to 4.9.5, switch to embedded heimdal build

* update to 4.9.5
* use embedded heimdal build
* remove mitkrb5 deps
* add AD-DC tools (samba4kinit samba4kgetcred samba4kpasswd samba4ktutil)
* add eventlogadm to ADMIN tools
* build VFS modules shared
* preserve custom smb.conf after reboots
* add missing lib/samba/? private dirs, even if empty
* handle python-crypto via EXTRA_DEPENDS
* fix CONFIGURE_CMD argument order
* move python install to libs
* remove redundant Config.in selects

Signed-off-by: Andy Walsh <andy.walsh44+github@gmail.com>

net/samba4/Config.in

@@ -1,7 +1,6 @@
 config SAMBA4_SERVER_ACL
 	bool "ACL support (xattr)"
 	depends on PACKAGE_samba4-server
-	select PACKAGE_acl
 	help
 		installs: sharesec
 			modules: vfs_acl_xattr vfs_acl_tdb vfs_posixacl
@@ -12,13 +11,9 @@ config SAMBA4_SERVER_ACL
 config SAMBA4_SERVER_AD_DC
 	bool "Active Directory Domain Controller support (requires krb5-server) (EXPERIMENTAL)"
 	depends on PACKAGE_samba4-server
-	select PACKAGE_python-base
 	select PACKAGE_python-crypto
-	select PACKAGE_libopenssl
-	select PACKAGE_libgnutls
-	select PACKAGE_libopenldap
 	help
-		installs: samba (meta-daemon) python-crypt ntlm_auth
+		installs: samba (meta-daemon) python-crypto ntlm_auth
 			scripts: samba-tool
 
 		Run as a Active Directory Domain Controller
@@ -31,7 +26,6 @@ config SAMBA4_SERVER_AVAHI
 	bool "Avahi support"
 	depends on PACKAGE_samba4-server
 	select SAMBA4_SERVER_VFS
-	select PACKAGE_libavahi-client
 	help
 		Announce Samba resources via DNS/DNS-SD using the Avahi daemon, for Linux/Mac clients.
 	default y
@@ -81,7 +75,6 @@ config SAMBA4_SERVER_NETBIOS
 config SAMBA4_SERVER_WINBIND
 	bool "Winbind support"
 	depends on PACKAGE_samba4-server
-	depends on SAMBA4_SERVER_AD_DC
 	help
 		installs: winbindd (daemon) wbinfo