git: gcc50: add some missing files

[Markus Pfeiffer]

commit add59a7aabbee2fbf0fdd7af46f6dc50120e40cd
Author: Markus Pfeiffer <markus.pfeiffer at morphism.de>
Date:   Sat Dec 5 14:16:18 2015 +0000

    gcc50: add some missing files
    
    * mutex.h is an internal header omitted from a previous commit
    * quoted_string.h and mutex.h were missing in Makefile.headers
    
    This broke compilation of cmake-3.3.1 on my system.

Summary of changes:
 gnu/lib/gcc50/libstdcxx/headers/Makefile.headers | 2 ++
 1 file changed, 2 insertions(+)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/add59a7aabbee2fbf0fdd7af46f6dc50120e40cd


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