Updated with upstream update

meson.build

@@ -413,7 +413,7 @@ endif
 conf.set_quoted('MYPAINT_BRUSHES_DIR', mypaint_brushes_dir)
 
 pango_minver = '1.50.0'
-pangocairo   = dependency('pango',       version: '>='+pango_minver)
+pango        = dependency('pango',       version: '>='+pango_minver)
 pangocairo   = dependency('pangocairo',  version: '>='+pango_minver)
 pangoft2     = dependency('pangoft2',    version: '>='+pango_minver)
 rsvg_minver  = '2.40.6'
@@ -1142,13 +1142,16 @@ endif
 
 ## Lua
 
-lua = find_program('luajit', required: get_option('lua'))
+# At time of writing, lua-lgi works Lua 5.1, Lua 5.2, Lua 5.3 and LuaJIT2. On
+# most platforms, we use luajit. On MSYS2, only lua5.1 works with lua-lgi. This
+# is why we use this order for lua detection.
+lua = find_program('luajit', 'lua5.1', 'lua5.2', 'lua5.3', required: get_option('lua'))
 have_lua = get_option('lua').enabled() or (lua.found() and get_option('lua').auto())
 if not lua.found() and have_lua
   lua_warning = '''
-  Luajit was not found.
+  Neither Luajit nor Lua was found.
   Lua plug-ins will be installed anyway but you should make sure that
-  luajit and LGI are available at installation, otherwise
+  luajit or lua and that LGI are available at installation, otherwise
   installed plug-ins won't be usable.
   '''
   warning(lua_warning)
@@ -1751,12 +1754,13 @@ custom_target('AUTHORS',
   ],
   build_by_default: false,
 )
+date = run_command('date', '-u', '+"%Y-%m-%dT%H:%M:%SZ"', check: true)
 custom_target('authors.md',
   input : [ 'authors4pika-web.xsl', 'authors.xml', ],
   output: 'authors.md',
   command: [
     xsltproc,
-    '--stringparam', 'today', '`date --iso-8601=seconds`',
+    '--stringparam', 'today', date.stdout().strip(),
     '-o', '@OUTPUT@',
     '@INPUT@',
   ],