Added Darwin dynamic lib support for Tools library

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@15 fdac6126-5c0c-442c-9429-916003d36597

Tools/Tools.pro

@@ -21,6 +21,12 @@ win32 {
  CONFIG  += static
 }
 
+macx {
+      # Post process
+      QMAKE_LFLAGS_SONAME = -install_name$${LITERAL_WHITESPACE}$${TOPDIR}/OpenMesh/Tools/lib/$${BUILDDIRECTORY}/
+      export(QMAKE_LFLAGS_SONAME)
+}
+
 # Input
 HEADERS += $$getFilesFromDir($$DIRECTORIES,*.hh)
 SOURCES += $$getFilesFromDir($$DIRECTORIES,*.c)