Added TelepathyBuddy.h to SOURCES. Please backport.

Cherry-pick from trunk@33183. From jbrefort

git-svn-id: svn+ssh://svn.abisource.com/svnroot/abiword/branches/ABI-3-0-0-STABLE@33186 bcba8976-2d24-0410-9c9c-aab3bd5fdfd6
Bug 13541 - Remove "using" from any of the header. This cause conflicts.

Cherry-pick from trunk@33223.

git-svn-id: svn+ssh://svn.abisource.com/svnroot/abiword/branches/ABI-3-0-0-STABLE@33224 bcba8976-2d24-0410-9c9c-aab3bd5fdfd6