meson: Avoid installing indirect symlinks

Where one symlink points to another symlink. This results in the Meson
install command failing on Windows, due to no actual symlinks being
created. What happens is that the subsequent verification step fails
because the installed file that it points to doesn't exist.

compiler/meson.build

@@ -12,8 +12,6 @@ valac_exe = executable(
 	install: true,
 )
 
-vala_name = 'vala@0@'.format(vala_version_suffix)
-
 install_symlink(
 	f'vala@vala_version_suffix@@exe_ext@',
 	pointing_to: f'@valac_name@@exe_ext@',
@@ -26,6 +24,6 @@ install_symlink(
 )
 install_symlink(
 	f'vala@exe_ext@',
-	pointing_to: f'vala@vala_version_suffix@@exe_ext@',
+	pointing_to: f'@valac_name@@exe_ext@',
 	install_dir: get_option('bindir'),
 )