[glibmm] Created tag 2.48.1

[Murray Cumming <murrayc src gnome org>]

The unsigned tag '2.48.1' was created.

Tagger: Murray Cumming <murrayc murrayc com>
Date: Thu Mar 31 11:56:54 2016 +0200

    2.48.1

Changes since the last tag '2.48.0':

Murray Cumming (6):
      Move thread_local check into a GLIBMM_CXX_* macro, like other checks.
      NEWS: Actually mention 2.48.0
      C++11: .hg/.ccg files: Replace typedefs with using.
      C++11: .h/.cc files: Replace typedefs with using.
      C++11: gmmproc: Use using instead of typedef.
      2.48.1

Tom Schoonjans (1):
      Build: Use Threads::Private hen thread_local keyword is not supported.