[xrdp/el5] Add pkgconfig to build requirements.

[bojan]

commit 0c59d2e82d658b2014c3848bf66f0960ba482048
Author: Bojan Smojver <bojan at rexursive.com>
Date:   Wed Dec 10 13:24:06 2014 +1100

    Add pkgconfig to build requirements.

 xrdp.spec |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/xrdp.spec b/xrdp.spec
index 4c8e9b9..4eff7ae 100644
--- a/xrdp.spec
+++ b/xrdp.spec
@@ -29,6 +29,7 @@ BuildRequires:  automake
 BuildRequires:  libtool
 Buildrequires:  libX11-devel
 BuildRequires:  libXfixes-devel
+BuildRequires:  pkgconfig
 
 #vnc-server provides Xvnc (tigervnc-server in fedora)
 Requires: vnc-server