STYLE: minor adjustment for documentation

- remove extra scotch readme, already mentioned in regular
  BUILD/README files

- additional sources.txt to note which versions have been shipped.

BUILD.md

@@ -18,24 +18,33 @@ OpenFOAM depends to a certain extent on third-party libraries
 scripts for building third-party packages. It should normally only be used in
 conjunction with the corresponding OpenFOAM version.
 
+## Organization
 
-## Configuration of Third-Party Versions
+The ThirdParty directory contains a number of build scripts as well as
+some directories:
 
-The distributed make scripts can generally be used for a variety of
-versions of the third-party libraries, with the software version
-specified on the command-line. For example,
+| Directory         | Contains
+|-------------------|--------------------------------------------
+| etc/              | auxiliary scripts used for the build process
+| build/            | intermediate build objects
+| platforms/        | the installation directories
 
-    $ ./makeFFTW -help
-    usage: makeFFTW [OPTION] [fftw-VERSION]
 
-If a version is not explicitly specified on the command-line, it will
-use the version as specified by the appropriate OpenFOAM
-`etc/config.sh/...` entry.
+## Configuration of Third-Party Versions
 
+For most of the build scripts, the default software version
+is provided by an appropriate OpenFOAM `etc/config.sh/...` entry.
 This approach avoids duplicate entries for the default versions and
 ensures the best overall consistency between the OpenFOAM installation
 and its corresponding third-party installation.
 
+Nonethess, the distributed make scripts can generally be used for a
+variety of versions of the third-party libraries, with the software
+version specified on the command-line. For example,
+
+    $ ./makeFFTW -help
+    usage: makeFFTW [OPTION] [fftw-VERSION]
+
 ---
 
 ## Before Starting

README.md

@@ -18,24 +18,18 @@ OpenFOAM depends to a certain extent on third-party libraries
 scripts for building third-party packages. It should normally only be used in
 conjunction with the corresponding OpenFOAM version.
 
-
 ## Configuration of Third-Party Versions
 
-The distributed make scripts can generally be used for a variety of
-versions of the third-party libraries, with the software version
-specified on the command-line. For example,
-
-    $ ./makeFFTW -help
-    usage: makeFFTW [OPTION] [fftw-VERSION]
-
-If a version is not explicitly specified on the command-line, it will
-use the version as specified by the appropriate OpenFOAM
-`etc/config.sh/...` entry.
-
+For most of the build scripts, the default software version
+is provided by an appropriate OpenFOAM `etc/config.sh/...` entry.
 This approach avoids duplicate entries for the default versions and
 ensures the best overall consistency between the OpenFOAM installation
 and its corresponding third-party installation.
 
+Nonethess, the distributed make scripts can generally be used for a
+variety of versions of the third-party libraries, with the software
+version specified on the command-line.
+
 ---
 
 ## Before Starting
@@ -56,10 +50,10 @@ and its corresponding third-party installation.
 
 Many components of ThirdParty are *optional* or are invoked
 automatically as part of the top-level OpenFOAM `Allwmake`.
-Nonetheless it may be necessary or useful to build various
+Nonetheless it may be necessary or useful to build particular
 ThirdParty components prior to building OpenFOAM itself.
 
-## Build Sequence
+### Build Sequence
 
 1. `makeGcc` _or_ `makeLLVM` *(optional)*
 2. `makeCmake`  *(optional)*

sources.txt

+Third-Party Sources
+===================
+
+OpenFOAM+ v1612
+---------------
+CGAL-4.9
+ParaView-5.2.0
+boost_1_62_0
+fftw-3.3.5
+openmpi-1.10.4
+scotch_6.0.3
+
+
+OpenFOAM+ v1606
+---------------
+CGAL-4.8
+ParaView-5.0.1
+boost_1_61_0
+fftw-3.3.4
+openmpi-1.10.2
+scotch_6.0.3
+
+
+OpenFOAM+ v3.0
+---------------
+CGAL-4.7
+ParaView-4.4.0
+openmpi-1.10.0
+scotch_6.0.3
+
+
+OpenFOAM+ 2.4
+---------------
+CGAL-4.6
+ParaView-4.1.0
+cmake-2.8.12.1
+openmpi-1.8.5
+scotch_6.0.3