meson: fix configure-time warning - Use the 'pie' kwarg instead of passing...

meson: fix configure-time warning - Use the 'pie' kwarg instead of passing '-fpie' manually. Also bump Meson to 0.49.0, when the pie kwarg was added.

meson.build

 project('libhandy', 'c',
           version: '0.0.11',
           license: 'LGPL-2.1+',
-    meson_version: '>= 0.47.0',
+    meson_version: '>= 0.49.0',
   default_options: [ 'warning_level=1', 'buildtype=debugoptimized', 'c_std=gnu11' ],
 )
 

tests/meson.build

@@ -10,7 +10,6 @@ test_env = [
 ]
 
 test_cflags = [
-  '-fPIE',
   '-DHDY_LOG_DOMAIN="Handy"',
   '-DTEST_DATA_DIR="@0@/data"'.format(meson.current_source_dir()),
 ]
@@ -49,6 +48,7 @@ foreach test_name : test_names
 		 c_args: test_cflags,
 		 link_args: test_link_args,
 		 dependencies: libhandy_deps + [libhandy_dep],
+                 pie: true,
 		)
   test(test_name, t, env: test_env)
 endforeach