[gimp] configure, meson: missing OpenRaster MIME type in desktop file.

[Jehan <jehanp src gnome org>]

commit 1de810f6de73ecf10eed01390f14aa4b3df43e0d
Author: Jehan <jehan girinstud io>
Date:   Sat Feb 20 18:47:43 2021 +0100

    configure, meson: missing OpenRaster MIME type in desktop file.
    
    Adding support for .ora files when Python plug-ins are installed.

 configure.ac | 11 +++++------
 meson.build  |  2 ++
 2 files changed, 7 insertions(+), 6 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 4ec183c227..4944a2f6ee 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2287,12 +2287,10 @@ GOAT_EXERCISES="goat-exercise-c$BUILD_EXEEXT"
 
 # By default, we want packagers to install Python plug-ins to get the
 # optimum experience. --with-python=yes will check for a Python 3
-# interpreter and PyGObject, and fails without.
-# --with-python=force will install the plug-ins even though the
-# dependencies are not found at build time. It is up to the packager to
-# ensure they are available at run time. This can be useful in
-# particular when cross-compiling since anyway the interpreter is not
-# useful at build time.
+# interpreter and PyGObject, but still succeeds without, simply
+# outputting a warning (these are runtime not build dependencies).
+# This can be useful in particular when cross-compiling since anyway the
+# interpreter is not useful at build time.
 # --with-python=no won't install Python plug-ins. It is discouraged.
 AC_ARG_WITH(python,
             [  --with-python=no|yes install Python 3 plug-ins (default=yes)], ,
@@ -2324,6 +2322,7 @@ WARNING: ${warning_python}
   AC_SUBST(PYBIN_PATH)
 
   GOAT_EXERCISES="$GOAT_EXERCISES:goat-exercise-py3.py"
+  MIME_TYPES="$MIME_TYPES;image/openraster"
 else
   with_python="no (disabled)"
 fi
diff --git a/meson.build b/meson.build
index 4ca630274d..688a5abb59 100644
--- a/meson.build
+++ b/meson.build
@@ -959,6 +959,8 @@ if have_python
     warning(python_warning)
     warnings += python_warning
   endif
+
+  MIMEtypes += 'image/openraster'
 endif
 
 ## Javascript