MIDI: Several ALSA Seq improvements
===================================
Many things were done in this patch (I couldn't really split in several
patches):
* Only one ALSA Sequencer client per application
* ALSA Sequencer client name is the application's name by default
* Fixed a bug when getDeivces() would return devices created by the
application itself
* Only ports created with createNewDevice() are allowed to be subscribed,
other ports (created by openDevice()) doesn't allow subscription
* AlsaPort is now handled by AlsaClient, basically having the proper
representation such as the ALSA Sequencer has.
Files: Fix default directory paths
==================================
Some information on:
* Linux LSB FHS:
http://www.linuxfoundation.org/collaborate/workgroups/lsb/fhs-30
* https://wiki.archlinux.org/index.php/Xdg_user_directories
Refactor Event loop to remove X11 dependency
============================================
The goal of this refactor was to remove X11 dependencies on juce_events
to enable non-gui applications (example, Embedded Linux apps) to have no
libx11 dependency.
The side-effect of this refactor is easy implementation of other Linux
graphical back-end, cleanup some code, better handling of X displays and
other benefits.
I removed a lot of the code from juce_linux_Windowing to separate files
for clarity. I also renamed all Linux X11 files to *linux_X11* instead of
just *linux*.
X11: Remove unnecessary XGrabButton call
========================================
This call is made unnecessary if used proper window flags when a window
is created.
