STYLE: use IF(NOT ...) instead of IF() ELSE() ... ENDIF()

Alex

Modules/CMakeTestFortranCompiler.cmake

@@ -38,8 +38,7 @@ ENDIF(NOT CMAKE_Fortran_COMPILER_WORKS)
 
 IF(CMAKE_Fortran_COMPILER_WORKS)
   # Test for Fortran 90 support by using an f90-specific construct.
-  IF(DEFINED CMAKE_Fortran_COMPILER_SUPPORTS_F90)
-  ELSE(DEFINED CMAKE_Fortran_COMPILER_SUPPORTS_F90)
+  IF(NOT DEFINED CMAKE_Fortran_COMPILER_SUPPORTS_F90)
     MESSAGE(STATUS "Checking whether ${CMAKE_Fortran_COMPILER} supports Fortran 90")
     FILE(WRITE ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testFortranCompilerF90.f90 "
       PROGRAM TESTFortran90
@@ -62,5 +61,5 @@ IF(CMAKE_Fortran_COMPILER_WORKS)
         "the following output:\n${OUTPUT}\n\n")
       SET(CMAKE_Fortran_COMPILER_SUPPORTS_F90 0 CACHE INTERNAL "")
     ENDIF(CMAKE_Fortran_COMPILER_SUPPORTS_F90)
-  ENDIF(DEFINED CMAKE_Fortran_COMPILER_SUPPORTS_F90)
+  ENDIF(NOT DEFINED CMAKE_Fortran_COMPILER_SUPPORTS_F90)
 ENDIF(CMAKE_Fortran_COMPILER_WORKS)