xfce4-systemload-plugin: upgrade 1.3.0 -> 1.3.1 / introduce PACKAGECONFIGs

* Both dependencies upower/libgtop are optional so add PACKAGECONFIG and enable
  both because they are worth it.
* The term '(uses libgtop as a fallback)' below is a bit misleading: In
  xfce4-systemload-plugin-1.3.1/panel-plugin/network.c we find whole code
  wrapped by #ifdef HAVE_LIBGTOP / #endif. So in case libgtop is not found
  nothing of value is compiled.

1.3.1 (2021-03-22)
=====
- Update README.md
- Update and sort the list of authors
- Add a simple network bandwidth monitor (uses libgtop as a fallback)
- Remove 4-valued history
- Fix initial progress bar value
- Fix system-monitor-command setting (Fixes openembedded#15)
- Distinguish uptime from the appearance of a digital real-time clock
- Replace "Options" with "Label" in the properties dialog
- Finish porting to xfconf
- Update docs URL
- Code cleanups
- Translation Updates

Signed-off-by: Andreas Müller <[email protected]>
Signed-off-by: Khem Raj <[email protected]>

Author: schnitzeltony

meta-xfce/recipes-panel-plugins/systemload/xfce4-systemload-plugin_1.3.0.bb renamed to meta-xfce/recipes-panel-plugins/systemload/xfce4-systemload-plugin_1.3.1.bb

@@ -5,6 +5,8 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=9acb172a93ff6c43cce2aff790a8aef8"
 
 inherit xfce-panel-plugin
 
-DEPENDS += "upower"
+PACKAGECONFIG ?= "network power"
+PACKAGECONFIG[power] = ",,upower"
+PACKAGECONFIG[network] = ",,libgtop"
 
-SRC_URI[sha256sum] = "1148f8e90cc53cae9b3aa32e10df4bd9fdc2f06db09d8429f88fbdd874fc171d"
+SRC_URI[sha256sum] = "56d1007801d52d7c2b5a13bb54745f6d7f06fda28b49ce936145633068817652"