Released v4.0.0

• Fixed: (BUG::old) cxc_try_switch(): don't propagate the exception in case when invoked from CXC_RESTART(),
• Fixed: (BUG) CXC_SIGQUEUE(): siginfo_t located on stack was not fully initialized,
• Fixed: (BUG::regression::old) rcd_autoconf.m4: changing rcd_autogen run mode at configure time didn't work,
• Change: Renamed cxc_entry accessors from cxc_get_xxx() to cxc_entry_get_xxx(),
• Added: cxc_rcdGetMsg() needed to get messages from CXC_INIT(), CXC_REG_SIGNAL() and CXC_REG_SIG_MASK(), before CXC_TRY() section,
• Update: rcd_autogen v2.7
  Full list in the change log.