Update README for interconnects

Refs trac:4082

This commit was SVN r30219.

The following Trac tickets were found above:
  Ticket 4082 --> https://svn.open-mpi.org/trac/ompi/ticket/4082

README

@@ -550,9 +550,11 @@ Network Support
     - OpenFabrics: InfiniBand, iWARP, and RoCE
     - Loopback (send-to-self)
     - Myrinet MX and Open-MX
-    - Portals
+    - Portals4
     - Shared memory
     - TCP
+    - Intel Phi SCIF
+    - SMCUDA
     - SCTP
     - uDAPL
     - Cisco usNIC
@@ -565,7 +567,7 @@ Network Support
     - Myrinet MX and Open-MX
     - InfiniPath PSM
     - Mellanox MXM
-    - Portals
+    - Portals4
 
     Open MPI will, by default, choose to use "cm" when the InfiniPath
     PSM or the Mellanox MXM MTL can be used.  Otherwise, "ob1" will be
@@ -642,7 +644,7 @@ Network Support
   Open MPI assumes that only naive one-sided communication
   capabilities are provided by the low level communication layers.
   However, modern communication layers such as Myrinet MX, InfiniPath
-  PSM, or Portals, natively implement highly-optimized two-sided
+  PSM, or Portals4, natively implement highly-optimized two-sided
   communication semantics.  To leverage these capabilities, Open MPI
   provides the "cm" PML and corresponding MTL components to transfer
   messages rather than bytes.  The MTL interface implements a shorter
@@ -894,22 +896,22 @@ NETWORKING SUPPORT / OPTIONS
 --with-openib-libdir=<directory>
   DEPRECATED synonym for --with-verbs-libdir.
 
---with-portals=<directory>
-  Specify the directory where the Portals libraries and header files
-  are located.  This option is generally only necessary if the Portals
+--with-portals4=<directory>
+  Specify the directory where the Portals4 libraries and header files
+  are located.  This option is generally only necessary if the Portals4
   headers and libraries are not in default compiler/linker search
   paths.
 
-  Portals is the support library for Cray interconnects, but is also
-  available on other platforms (e.g., there is a Portals library
+  Portals4 is the support library for Cray interconnects, but is also
+  available on other platforms (e.g., there is a Portals4 library
   implemented over regular TCP).
 
---with-portals-config=<type>
-  Configuration to use for Portals support. The following <type>
-  values are possible: "utcp", "xt3", "xt3-modex" (default: utcp).
+--with-portals4-libdir=<libdir>
+  Location of libraries to link with for Portals4 support.
 
---with-portals-libs=<libs>
-  Additional libraries to link with for Portals support.
+--with-portals4-max-md-size=SIZE
+--with-portals4-max-va-size=SIZE
+  Set configuration values for Portals 4
 
 --with-psm=<directory>
   Specify the directory where the QLogic InfiniPath PSM library and
@@ -936,6 +938,9 @@ NETWORKING SUPPORT / OPTIONS
   look in <sctp directory>/lib and <sctp directory>/lib64, which covers
   most cases.  This option is only needed for special configurations.
 
+--with-scif=<dir>
+  Look in directory for Intel SCIF support libraries
+
 --with-udapl=<directory>
   Specify the directory where the UDAPL libraries and header files are
   located.  Note that UDAPL support is disabled by default on Linux;