most of the 2.X->3.0 commit (up to rev 4299) except for gtk2_ardour/editor_canvas.cc; builds and runs and does a few specific things but expect it to be buggy for a while yet

git-svn-id: svn://localhost/ardour2/branches/3.0@4313 d708f5d6-7413-0410-9779-e7cbd77b26cf

tools/synthesize_sources.pl

@@ -7,6 +7,8 @@
 # for each missing source file. The length of each file is determined
 # by how far regions using that source file go into the sample data.
 
+use FindBin '$Bin';
+use lib "$Bin";
 use XML::Parser::PerlSAX;
 use XML::Handler::XMLWriter;
 use IO::Handle;