[pan] Rename pan.appdata.xml to be consistent

[Petr Kovář <pmkovar src gnome org>]

commit fd35c45f84ba39fc7f03e929a7f8ffbb7599cc38
Author: Petr Kovar <pkovar redhat com>
Date:   Mon Dec 6 19:28:18 2021 +0100

    Rename pan.appdata.xml to be consistent
    
    https://www.freedesktop.org/software/appstream/docs/chap-Metadata.html#spec-component-location

 Makefile.am                                         | 8 ++++----
 pan.appdata.xml.in => org.gnome.pan.metainfo.xml.in | 0
 po/POTFILES.in                                      | 2 +-
 3 files changed, 5 insertions(+), 5 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 9934106..081dee8 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -11,10 +11,10 @@ org.gnome.pan.desktop: org.gnome.pan.desktop.in
 desktopdir = $(datadir)/applications
 desktop_DATA = org.gnome.pan.desktop
 
-pan.appdata.xml: pan.appdata.xml.in
+org.gnome.pan.metainfo.xml: org.gnome.pan.metainfo.xml.in
        $(AM_V_GEN)$(MSGFMT) --xml --template $< -d $(top_srcdir)/po -o $@
-appdatadir = $(datadir)/appdata
-appdata_DATA = pan.appdata.xml
+appdatadir = $(datadir)/metainfo
+appdata_DATA = org.gnome.pan.metainfo.xml
 
 man_MANS = pan.1
 
@@ -44,7 +44,7 @@ EXTRA_DIST = \
  README.org \
  README.windows \
  org.gnome.pan.desktop.in \
- pan.appdata.xml.in \
+ org.gnome.pan.metainfo.xml.in \
  pan-git.version \
  $(man_MANS) \
  $(NULL)
diff --git a/pan.appdata.xml.in b/org.gnome.pan.metainfo.xml.in
similarity index 100%
rename from pan.appdata.xml.in
rename to org.gnome.pan.metainfo.xml.in
diff --git a/po/POTFILES.in b/po/POTFILES.in
index b575520..e6948ac 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -1,7 +1,7 @@
 # List of source files containing translatable strings.
 # Please keep this file sorted alphabetically.
 org.gnome.pan.desktop.in
-pan.appdata.xml.in
+org.gnome.pan.metainfo.xml.in
 pan/data/article-cache.cc
 pan/data/cert-store.cc
 pan/data/encode-cache.cc