Finit v2.1

Changes

• Add hook point for fstab mount failure
• Set hostname on dynamic reload
• Upgrade to libite v1.1.1

Fixes

• Fix service callback coredump checks and simplify callback exit
• Do not use -Os use -O2 as default optimization level. Many cross
  compiler toolchains are known to have problems with -Os
• Do not allow build VERSION to be overloaded by an environment variable
• Fix too small MAX arguments and too few argments in svc_t for
  reading currently running services with initctl show
• Unblock blocked signals after forking off a child