Correct references to openrc & systemd units in restructured /files folder
Add reference to systemd pre-exec setup script (btsync_setup)
Add commented reference to new macro: systemd_newuserunit (currently in Portage Git tree)
Corrected install systemd user unit (using workaround at present)
Updated Manifest file
ebuild variable references fixed
ebuild's cleaned up and slimmed down
stable branch of btsync updated from 1.3.94 to 1.3.105
btsync binary install path corrected to Gentoo standard: /opt/
systemd service unit CPU & I/O priority lowered to idle
systemd service units reference corrected btsync binary path
OpenRC/init.d files tied up and reference corrected binary path
Manifest file rebuilt
