confd: clean up, simplify use common log framework

 - Use same log frameworks as reset of confd
 - Use existing primitives from libite + libsrx
 - Drop remaining pthreads
 - Coding style fixes

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

Author: troglobit

package/confd/confd.conf

@@ -3,10 +3,9 @@
 # Single daemon handles gen-config, datastore init, config load, and plugins
 #  log:prio:daemon.err
 service log:console env:/etc/default/confd           \
-	[S12345] <usr/ixinit> confd -f -n -v warning \
+	[S12345] <usr/ixinit> confd -f -v warning \
 		-F /etc/factory-config.cfg \
 		-S /cfg/startup-config.cfg \
 		-E /etc/failure-config.cfg \
-		-p /run/confd.pid          \
 		-t $CONFD_TIMEOUT \
 	-- Configuration daemon

src/confd/src/Makefile.am

@@ -6,8 +6,8 @@ plugin_LTLIBRARIES      = confd-plugin.la
 
 sbin_PROGRAMS           = confd
 
-confd_CFLAGS            = $(sysrepo_CFLAGS) $(libyang_CFLAGS) $(jansson_CFLAGS) $(libite_CFLAGS)
-confd_LDADD             = $(sysrepo_LIBS)   $(libyang_LIBS)   $(jansson_LIBS)   $(libite_LIBS)   $(EV_LIBS) -ldl
+confd_CFLAGS            = $(sysrepo_CFLAGS) $(libyang_CFLAGS) $(jansson_CFLAGS) $(libite_CFLAGS) $(libsrx_CFLAGS)
+confd_LDADD             = $(sysrepo_LIBS)   $(libyang_LIBS)   $(jansson_LIBS)   $(libite_LIBS)   $(libsrx_LIBS) $(EV_LIBS) -ldl
 confd_SOURCES           = main.c
 
 confd_plugin_la_LDFLAGS = -module -avoid-version -shared