Simplify, remove #ifdefs for always defined paths

We always want to build with support for UNIX domain socket and remote
syslog (both receive and send).  We can safely state that all systems
we aim to target supports FHS.

Also, start clean up gratuitous use of SYSV #ifdefs.

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

docs/INSTALL

@@ -7,24 +7,13 @@
     Compilation has been tested with versions 2.5.8, 2.6.3 and 2.7.0 of
     the gcc compiler and libc versions 4.5.26 and 4.6.27.
 
-3.) The FSSTND makes suggestions as to appropriate locations for
-    system binaries.  Since not everyone agrees with standards it is
-    up to the system administrator installing the utilities to choose
-    the most appropriate locations for the binaries and their
-    configuration files.  By default the package will compile and
-    install following the FSSTND recommendations.  If a decision is
-    made to change this behavior consult the makefile and the sources.
-    The FSSTND define controls selection of values which may be
-    influenced by the choice of conformance with the FSSTND or site
-    preferences.
-
-4.) For proper functioning both of these utilities are best run as root.
+3.) For proper functioning both of these utilities are best run as root.
     This is probably not much of a problem since they will probably be
     started either by init or as part of the rc.* startup process.  There
     may be security concerns with running syslogd as root.  Please repeat
     step 1 if you are unsure of why this may be the case.
 
-5.) If kernel address to symbol translation is desired there is the
+4.) If kernel address to symbol translation is desired there is the
     possibility that a new kernel will need to be compiled.  The patches
     to delimit kernel addresses requiring translation were added to
     kernel 1.3.43.  If this kernel or a newer kernel is used there is