Use MCE::Channel for MCE::Hobo->yield to not incur unnecessary delays
due to busy shared-manager process.Re-factored recent changes regarding IPC safety in MCE::Shared::Server.
This update defers signal handling for HUP, INT, PIPE, QUIT, TERM, and
custom handlers during IPC without incurring a performance penalty.
See POD section labled "DEFER SIGNAL" in MCE::Signal 1.863.Reverted $hobo->exit back to sending the SIGQUIT signal in MCE::Hobo
now that MCE::Shared::Server defers signal during IPC.Improved reliability for spawning MCE::Hobo inside threads including
nested parallelization, made possible using a global lock $MCE::_GMUTEX
in MCE 1.863.Updated signal handling in mce-examples/framebuffer on GitHub.
Bumped MCE dependency to 1.863.