LinGui: add separate UI xml for gtk 3.14

and fix a parser bug


git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@6672 b64f7644-9d1e-0410-96f1-a4d463321fa5
libhb: initialize the buffer pool only once

We leak a little memory for the buffer pool lists if we initialize it
with every new hb_handle_t.


git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@6673 b64f7644-9d1e-0410-96f1-a4d463321fa5
LinGui: fix building gtk gui on mingw, add regex to link


git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@6674 b64f7644-9d1e-0410-96f1-a4d463321fa5
LinGui: better stderr redirection on mingw


git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@6675 b64f7644-9d1e-0410-96f1-a4d463321fa5