Added distro-specific init scripts based on those used by NM (these are very experimental and likely broken in many cases).

Updated setup.py to pick which initscript to install based on the distro detected.
Updated MANIFEST.in to make sure launchdaemon.sh is included in the sdist build.
Fixed a bunch of crash bugs in tool detection system when tools are detected.
Made tool detection work correctly when "which" returns output if no match is found (as opposed to no output).  Eventually we might want to hardcode possible paths instead of using which at all...
Fixed some message formatting in the daemon.
Added some docstrings.
Added a pidfile system for increased initscript compatibility (sort of, it's somewhat incomplete).

daemon.py

@@ -172,6 +172,7 @@ class ConnectionWizard(dbus.service.Object):
             print "autoconnecting...", str(self.GetWirelessInterface())
             self.AutoConnect(True)
         else:
+            self.Scan()
             print "--no-scan detected, not autoconnecting..."
 
     ########## DAEMON FUNCTIONS
@@ -440,8 +441,8 @@ class ConnectionWizard(dbus.service.Object):
     def GetAutoReconnect(self):
         """ Returns the value of self.auto_reconnect. See SetAutoReconnect. """
         do = bool(self.auto_reconnect)
-        return self.__printReturn('returning automatically reconnect when\
-                                   connection drops', do)
+        return self.__printReturn('returning automatically reconnect when ' \
+                                   + 'connection drops', do)
 
     @dbus.service.method('org.wicd.daemon')
     def SetAutoReconnect(self, value):
@@ -567,7 +568,7 @@ class ConnectionWizard(dbus.service.Object):
         state - info contents:
         NOT_CONNECTED - info[0] = ""
         CONNECTING - info[0] = "wired" or "wireless"
-                     info[1] = None for wired, essid for wireless
+                     info[1] = None if wired, an essid if wireless
         WIRED - info[0] = IP Adresss
         WIRELESS - info[0] = IP Address
                    info[1] = essid
@@ -719,8 +720,8 @@ class ConnectionWizard(dbus.service.Object):
         """ Sets property to value in network specified. """
         # We don't write script settings here.
         if (property.strip()).endswith("script"):
-            print "Setting script properties through the daemon is not \
-                   permitted."
+            print "Setting script properties through the daemon is not" \
+                   + " permitted."
             return False
         self.LastScan[networkid][property] = misc.Noneify(value)
     #end function SetProperty
@@ -729,7 +730,10 @@ class ConnectionWizard(dbus.service.Object):
     def DetectWirelessInterface(self):
         """ Returns an automatically detected wireless interface. """
         iface = self.wifi.DetectWirelessInterface()
-        print 'automatically detected wireless interface ' + iface
+        if iface:
+            print 'automatically detected wireless interface ' + iface
+        else:
+            print "Couldn't detect a wireless interface."
         return str(iface)
     
     @dbus.service.method('org.wicd.daemon.wireless')
@@ -877,7 +881,7 @@ class ConnectionWizard(dbus.service.Object):
 
     @dbus.service.method('org.wicd.daemon.wired')
     def CheckWiredConnectingMessage(self):
-        """ Returns the wired interface\'s status message. """
+        """ Returns the wired interface's status message. """
         if self.wired.connecting_thread:
             return self.wired.connecting_thread.GetStatus()
         else:
@@ -887,8 +891,8 @@ class ConnectionWizard(dbus.service.Object):
     def SetWiredProperty(self, property, value):
         if self.WiredNetwork:
             if (property.strip()).endswith("script"):
-                print "Setting script properties through the daemon \
-                      is not permitted."
+                print "Setting script properties through the daemon" \
+                      + " is not permitted."
                 return False
             self.WiredNetwork[property] = misc.Noneify(value)
             return True
@@ -1404,10 +1408,11 @@ Arguments:
 \t-f\t--no-daemon\tDon't daemonize (run in foreground).
 \t-e\t--no-stderr\tDon't redirect stderr.
 \t-o\t--no-stdout\tDon't redirect stdout.
+\t-P\t--pidfile path\tCreate a pidfile at the specified path.
 \t-h\t--help\t\tPrint this help.
 """
 
-def daemonize():
+def daemonize(write_pid, pidfile):
     """ Disconnect from the controlling terminal.
 
     Fork twice, once to disconnect ourselves from the parent terminal and a
@@ -1436,7 +1441,10 @@ def daemonize():
     try:
         pid = os.fork()
         if pid > 0:
-            print "wicd daemon: pid " + str(pid)
+            if not write_pid:
+                print "wicd daemon: pid " + str(pid)
+            else:
+                print >> open(pidfile,'wt'), str(pid)
             sys.exit(0)
     except OSError, e:
         print >> sys.stderr, "Fork #2 failed: %d (%s)" % (e.errno, e.strerror)
@@ -1456,13 +1464,16 @@ def main(argv):
     auto_scan = True
 
     try:
-        opts, args = getopt.getopt(sys.argv[1:], 'feos',
-                ['help', 'no-daemon', 'no-stderr', 'no-stdout', 'no-scan'])
+        opts, args = getopt.getopt(sys.argv[1:], 'feosP:',
+                ['help', 'no-daemon', 'no-stderr', 'no-stdout', 'no-scan',
+                 'pidfile:'])
     except getopt.GetoptError:
         # Print help information and exit
         usage()
         sys.exit(2)
-
+        
+    write_pid = False
+    pid_file = None
     for o, a in opts:
         if o in ('-h', '--help'):
             usage()
@@ -1475,12 +1486,16 @@ def main(argv):
             do_daemonize = False
         if o in ('-s', '--no-scan'):
             auto_scan = False
+        if o in ('-P', '--pidfile'):
+            write_pid = True
+            pid_file = a
 
-    if do_daemonize: daemonize()
-
+    if do_daemonize: daemonize(write_pid, pid_file)
+      
     if redirect_stderr or redirect_stdout: output = LogWriter()
     if redirect_stdout: sys.stdout = output
     if redirect_stderr: sys.stderr = output
+    time.sleep(1)
 
     print '---------------------------'
     print 'wicd initializing...'