Remove reference to log_to_syslog() if libdaemon support is included.

diff --cc configure.ac
index 6d206af33f84e97e20dbaa436b6b2bdd47572bb4,3d2146fe1440cf6d7589dd06a296bd75c2df8afb..b3d2dbb89eaf758c24e4f8b0b3a36e5a3ddae69e
--- 1/configure.ac
--- 2/configure.ac
+++ b/configure.ac
@@@ -1,7 -1,7 +1,7 @@@
  # Process this file with autoconf to produce a configure script.
  
  AC_PREREQ([2.50])
- AC_INIT([shairport-sync], [5.2], [4265913+mikebrady@users.noreply.github.com])
 -AC_INIT([shairport-sync], [5.3-dev], [4265913+mikebrady@users.noreply.github.com])
++AC_INIT([shairport-sync], [5.2.1], [4265913+mikebrady@users.noreply.github.com])
  : ${CFLAGS="-O3"}
  : ${CXXFLAGS="-O3"}
  AM_INIT_AUTOMAKE([subdir-objects])