{debian/control,nx-libs.spec}: add proper dependencies upon xkbcomp for RPM and DEB packages.

debian/changelog

@@ -31,6 +31,10 @@ nx-libs (2:3.5.0.33-0x2go1) UNRELEASED; urgency=low
   * nx-X11: use the "old", non-NX header location.
     Affects:
     - 1270_nx-X11_CVE-2017-2624-Use-timingsafe_memcmp-to-c.full.patch
+  * {debian/control,nx-libs.spec}:
+    - Add proper dependencies upon xkbcomp for RPM and DEB packages.
+      Backported from Arctica GH 3.6.x branch.
+      v2: backport to nx-libs 3.5.0.x (Mihai Moldovan)
 
   [ Mike Gabriel ]
   * debian/libxinerama1.postinst.in:

debian/control

@@ -1007,6 +1007,8 @@ Depends:
 # </Workaround>
  ${shlibs:Depends},
  ${misc:Depends},
+# For /usr/bin/xkbcomp
+ x11-xkb-utils,
 Recommends:
  xfonts-base,
  xkb-data,

nx-libs.spec

@@ -599,6 +599,20 @@ Requires:       xorg-x11-fonts-core
 # works without the dependency.
 Requires:       xkeyboard-config
 
+# For /usr/bin/xkbcomp
+%if 0%{?fedora} || 0%{?rhel}
+Requires:       xorg-x11-xkb-utils
+%else
+%if 0%{?suse_version}
+%if 0%{?suse_version} >= 1310
+Requires:       xkbcomp
+%else
+# Older *SUSE versions bundle xkbcomp in xorg-x11. Ugly, but nothing we could change.
+Requires:       xorg-x11
+%endif
+%endif
+%endif
+
 %description -n nxagent
 NX is a software suite which implements very efficient compression of
 the X11 protocol. This increases performance when using X