update manual to point to packages.lammps.org instead of rpm.lammps.org

doc/src/Manual.txt

@@ -79,7 +79,7 @@ bug reports and feature requests are mainly coordinated through the
 "LAMMPS project on GitHub."_https://github.com/lammps/lammps
 The lammps.org domain, currently hosting "public continuous integration
 testing"_https://ci.lammps.org/job/lammps/ and "precompiled Linux
-RPM and Windows installer packages"_http://rpm.lammps.org is located
+RPM and Windows installer packages"_http://packages.lammps.org is located
 at Temple University and managed by Richard Berger,
 richard.berger at temple.edu.
 

doc/src/Section_start.txt

@@ -662,27 +662,25 @@ your own build system. Due to differences between the Windows OS
 and Windows system libraries to Unix-like environments like Linux
 or MacOS, when compiling for Windows a few adjustments may be needed:
 
-Do not set the -DLAMMPS_MEMALIGN define (see LMP_INC makefile variable)
+Do [not] set the -DLAMMPS_MEMALIGN define (see LMP_INC makefile variable)
 Add -lwsock32 -lpsapi to the linker flags (see LIB makefile variable)
-Try adding -static-libgcc or -static or both to the linker flags when your
+Try adding -static-libgcc or -static or both to the linker flags when your LAMMPS executable complains about missing .dll files  :ul
-LAMMPS executable complains about missing .dll files  :ul
 
-Since none of the current LAMMPS core developers
+Since none of the current LAMMPS core developers has significant
-has significant experience building executables on Windows, we are
+experience building executables on Windows, we are happy to distribute
-happy to distribute contributed instructions and modifications, but
+contributed instructions and modifications to improve the situation,
-we cannot provide support for those.
+but we cannot provide support for those.
 
 With the so-called "Anniversary Update" to Windows 10, there is a
 Ubuntu Linux subsystem available for Windows, that can be installed
 and then used to compile/install LAMMPS as if you are running on a
 Ubuntu Linux system instead of Windows.
 
-As an alternative, you can download "daily builds" (and some older
+As an alternative, you can download pre-compiled installer packages from
-versions) of the installer packages from
+"packages.lammps.org/windows.html"_http://packages.lammps.org/windows.html.
-"rpm.lammps.org/windows.html"_http://rpm.lammps.org/windows.html.
+These executables are built with most optional packages included and the
-These executables are built with most optional packages and the
+download includes documentation, potential files, some tools and many
-download includes documentation, potential files, some tools and
+examples, but no source code.
-many examples, but no source code.
 
 :line
 
@@ -1095,7 +1093,7 @@ LAMMPS to be built with one or more of its optional packages.
 :line
 
 On a Windows box, you can skip making LAMMPS and simply download an
-installer package from "here"_http://rpm.lammps.org/windows.html
+installer package from "here"_http://packages.lammps.org/windows.html
 
 For running the non-MPI executable, follow these steps:
 
@@ -1107,18 +1105,27 @@ the [in.lj] input from the bench folder. (e.g. by typing: cd "Documents"). :l
 
 At the command prompt, type "lmp_serial -in in.lj", replacing [in.lj]
 with the name of your LAMMPS input script. :l
+
+The serial executable includes support for multi-threading
+parallelization from the styles in the USER-OMP packages.
+
+To run with, e.g. 4 threads, type "lmp_serial -in in.lj -pk omp 4 -sf omp"
 :ule
 
-For the MPI version, which allows you to run LAMMPS under Windows on
+For the MPI version, which allows you to run LAMMPS under Windows with
-multiple processors, follow these steps:
+the more general message passing parallel library (LAMMPS has been
+designed from ground up to use MPI efficiently), follow these steps:
 
-Download and install
+Download and install a compatible MPI library binary package:
-"MPICH2"_http://www.mcs.anl.gov/research/projects/mpich2/downloads/index.php?s=downloads
+for 32-bit Windows
-for Windows. :ulb,l
+"mpich2-1.4.1p1-win-ia32.msi"_download.lammps.org/thirdparty/mpich2-1.4.1p1-win-ia32.msi
+and for 64-bit Windows
+"mpich2-1.4.1p1-win-x86-64.msi"_download.lammps.org/thirdparty/mpich2-1.4.1p1-win-x86-64.msi
+:ulb,l
 
 The LAMMPS Windows installer packages will automatically adjust your
 path for the default location of this MPI package. After the installation
-of the MPICH software, it needs to be integrated into the system.
+of the MPICH2 software, it needs to be integrated into the system.
 For this you need to start a Command Prompt in {Administrator Mode}
 (right click on the icon and select it). Change into the MPICH2
 installation directory, then into the subdirectory [bin] and execute
@@ -1137,7 +1144,7 @@ or
 
 mpiexec -np 4 lmp_mpi -in in.lj :pre
 
-replacing in.lj with the name of your LAMMPS input script. For the latter
+replacing [in.lj] with the name of your LAMMPS input script. For the latter
 case, you may be prompted to enter your password. :l
 
 In this mode, output may not immediately show up on the screen, so if
@@ -1149,6 +1156,11 @@ something like:
 
 lmp_mpi -in in.lj :pre
 
+And the parallel executable also includes OpenMP multi-threading, which
+can be combined with MPI using something like:
+
+mpiexec -localonly 2 lmp_mpi -in in.lj -pk omp 2 -sf omp :pre
+
 :ule
 
 :line