Merge pull request #286 from euanh/build-improvements

Build improvements
Merge pull request #287 from euanh/build-improvements

xcp-sm: Update changelog for 0.9.4
CentOS: Add make install target

Signed-off-by: Euan Harris <euan.harris@citrix.com>
Merge pull request #288 from euanh/centos-install

CentOS: Add make install target