URL tweaks.

README.gfc

@@ -2,13 +2,12 @@ You need to have the GFC library installed on your system to build
 some of the scenery generation tools, otherwise, some of the tools will fail
 to build.
 
-You can get the original library from:
+The original web page no longer exists, but the url *used* to be:
 
     http://www.geog.psu.edu/~qian/gfc/index.html
 
-However, until LJ rolls out the next release with a couple key fixes, 
 I recommend you grab a copy with a couple modifications I have made
 which should eliminate several gfc build problems:
 
-    ftp://ftp.flightgear.org/pub/fgfs/Source/gfc-0.8.8.1a.tar.gz
+    ftp://ftp.flightgear.org/pub/fgfs/Source/gfc-0.8.8.1b.tar.gz
 

README.plib

@@ -3,11 +3,7 @@ the FGFS simulator!"
 
 You can get the original library from:
 
-    http://www.woodsoup.org/~sbaker/plib/
-
-This library is also mirrored (identical) at:
-
-    ftp://ftp.flightgear.org/pub/fgfs/Source/plib-1.0.2.tar.gz
+    http://www.woodsoup.org/projs/plib/
 
 Build notes:
 

configure.in

@@ -7,7 +7,7 @@ dnl $Id$
 AC_INIT(Simulator/Aircraft/aircraft.cxx)
 
 dnl Initialize the automake stuff
-AM_INIT_AUTOMAKE(FlightGear, 0.6.0)
+AM_INIT_AUTOMAKE(FlightGear, 0.6.1)
 
 dnl configure other independant packages included with flight gear for
 dnl convenience
@@ -30,7 +30,7 @@ dnl AM_MAINTAINER_MODE
 dnl This is needed for AC_TRY_COMPILE later
 dnl AC_ISC_POSIX
 
-dnl Check to see if this `configure' is being run in the `Cygwin32' environmentplib-1.0_fgfs_a.tar.gz
+dnl Check to see if this `configure' is being run in the `Cygwin32' environment
 dnl AM_CYGWIN32
 
 dnl Specify if we want logging (testing build) or not (release build)
@@ -261,7 +261,7 @@ if test "x$ac_cv_header_gpc_h" != "xyes"; then
 fi
 
 dnl Check if  Geographic Foundation Classes library is installed
-dnl (from http://www.geog.psu.edu/~qian/gfc/index.html)
+dnl (from ftp://ftp.flightgear.org/pub/fgfs/Source/)
 AC_CHECK_HEADERS( gfc/gdbf.h )
 if test "x$ac_cv_header_gfc_gdbf_h" != "xyes"; then
     echo