Add support for Concurrent Fortran 77 Compiler

The Concurrent Fortran compiler (ccur.com) is available on Linux and can
be used much like the GNU Fortran compiler.  Currently it has no
preprocessor symbols to identify it so we need to detect it by matching
compiler output.

Suggested-by: Anthony Ette <Anthony.R.Ette@controlsdata.com>

Help/variable/CMAKE_LANG_COMPILER_ID.rst

@@ -11,6 +11,7 @@ include:
   Absoft = Absoft Fortran (absoft.com)
   ADSP = Analog VisualDSP++ (analog.com)
   AppleClang = Apple Clang (apple.com)
+  CCur = Concurrent Fortran (ccur.com)
   Clang = LLVM Clang (clang.llvm.org)
   Cray = Cray Compiler (cray.com)
   Embarcadero, Borland = Embarcadero (embarcadero.com)

Modules/CMakeDetermineFortranCompiler.cmake

@@ -98,7 +98,10 @@ else()
   # Each entry in this list is a set of extra flags to try
   # adding to the compile line to see if it helps produce
   # a valid identification executable.
-  set(CMAKE_Fortran_COMPILER_ID_TEST_FLAGS_FIRST)
+  set(CMAKE_Fortran_COMPILER_ID_TEST_FLAGS_FIRST
+    # Get verbose output to help distinguish compilers.
+    "-v"
+    )
   set(CMAKE_Fortran_COMPILER_ID_TEST_FLAGS
     # Try compiling to an object file only.
     "-c"
@@ -112,6 +115,10 @@ endif()
 if(NOT CMAKE_Fortran_COMPILER_ID_RUN)
   set(CMAKE_Fortran_COMPILER_ID_RUN 1)
 
+  # Table of per-vendor compiler output regular expressions.
+  list(APPEND CMAKE_Fortran_COMPILER_ID_MATCH_VENDORS CCur)
+  set(CMAKE_Fortran_COMPILER_ID_MATCH_VENDOR_REGEX_CCur "Concurrent Fortran [0-9]+ Compiler")
+
   # Table of per-vendor compiler id flags with expected output.
   list(APPEND CMAKE_Fortran_COMPILER_ID_VENDORS Compaq)
   set(CMAKE_Fortran_COMPILER_ID_VENDOR_FLAGS_Compaq "-what")

Modules/Compiler/CCur-Fortran.cmake

@@ -0,0 +1 @@
+include(Compiler/GNU-Fortran)

Modules/Platform/Linux-CCur-Fortran.cmake

@@ -0,0 +1 @@
+include(Platform/Linux-GNU-Fortran)