Add back the meson build system to xserver.

Not having those file only create noise when merging upstream releases.

xserver/randr/meson.build

@@ -0,0 +1,36 @@
+srcs_randr = [
+    'randr.c',
+    'rrcrtc.c',
+    'rrdispatch.c',
+    'rrinfo.c',
+    'rrlease.c',
+    'rrmode.c',
+    'rrmonitor.c',
+    'rroutput.c',
+    'rrpointer.c',
+    'rrproperty.c',
+    'rrprovider.c',
+    'rrproviderproperty.c',
+    'rrscreen.c',
+    'rrsdispatch.c',
+    'rrtransform.c',
+]
+
+hdrs_randr = [
+    'randrstr.h',
+    'rrtransform.h',
+]
+
+if build_xinerama
+    srcs_randr += 'rrxinerama.c'
+endif
+
+libxserver_randr = static_library('libxserver_randr',
+    srcs_randr,
+    include_directories: inc,
+    dependencies: common_dep,
+)
+
+if build_xorg
+    install_data(hdrs_randr, install_dir: xorgsdkdir)
+endif