Use ndn-cxx's Segmenter in SegmentPublisher

This commit also makes lld the preferred linker on Linux

Change-Id: I3a66f2e79a5378d005046c61a8ec2d49345508d6
diff --git a/.waf-tools/default-compiler-flags.py b/.waf-tools/default-compiler-flags.py
index 3ba2dc3..4debb4e 100644
--- a/.waf-tools/default-compiler-flags.py
+++ b/.waf-tools/default-compiler-flags.py
@@ -137,9 +137,7 @@
     def getGeneralFlags(self, conf):
         flags = super(GccBasicFlags, self).getGeneralFlags(conf)
         flags['CXXFLAGS'] += ['-std=c++17']
-        if Utils.unversioned_sys_platform() == 'linux':
-            flags['LINKFLAGS'] += ['-fuse-ld=gold']
-        elif Utils.unversioned_sys_platform() == 'freebsd':
+        if Utils.unversioned_sys_platform() != 'darwin':
             flags['LINKFLAGS'] += ['-fuse-ld=lld']
         return flags