Merge branch 'fix-el-spandsp' of https://github.com/space88man/rtpengine into master

Change-Id: I82534b80d65a2fb15ba4c9f28da4a0c7af9e99a4

el/rtpengine.spec

@@ -17,7 +17,7 @@ BuildRequires:	glib2-devel libcurl-devel openssl-devel pcre-devel
 BuildRequires:	xmlrpc-c-devel zlib-devel hiredis-devel
 BuildRequires:	libpcap-devel libevent-devel json-glib-devel 
 BuildRequires:	gperf perl-IPC-Cmd
-BuildRequires:  spandsp-devel
+BuildRequires:  pkgconfig(spandsp)
 Requires(pre):	shadow-utils
 
 %if 0%{?with_transcoding} > 0