fix compiling file_manager.cc on osx
commit2df2ae2d1c604228247c01751ae1c16d605a47f7
authortrutkin <trutkin@d708f5d6-7413-0410-9779-e7cbd77b26cf>
Tue, 6 Jul 2010 01:25:06 +0000 (6 01:25 +0000)
committertrutkin <trutkin@d708f5d6-7413-0410-9779-e7cbd77b26cf>
Tue, 6 Jul 2010 01:25:06 +0000 (6 01:25 +0000)
treec2f6ab6635cd5ac02b0cc42518353cdfb3f8906b
parent1ba2c958b6a71094ded88290583d52617bcf0c05
fix compiling file_manager.cc on osx

clock_gettime() and CLOCK_MONOTONIC aren't implemented on osx.
Replaced with get_absolute_time() as suggested here:
http://www.wand.net.nz/~smr26/wordpress/2009/01/19/monotonic-time-in-mac-os-x/

git-svn-id: http://subversion.ardour.org/svn/ardour2/ardour2/branches/3.0@7380 d708f5d6-7413-0410-9779-e7cbd77b26cf
libs/pbd/file_manager.cc