Prefer built binaries over ones installed on the system during tests

Prefer executables and libraries that have been built by ElmerFEM over
binaries of the same name that might be installed on the system. Do that
by prepending the paths in the build tree to an existing PATH variable.

Include path to libparpack in PATH on Windows.

MPIEXEC might be installed in a location containing spaces in the path.
E.g., the default location on Windows for it is
"C:\Program Files\Microsoft MPI\Bin\mpiexec.exe". Avoid issues with
spaces in that path by surrounding it with double quotes in the
respective commands.

cmake/Modules/test_macros.cmake

@@ -114,7 +114,7 @@ MACRO(RUN_ELMER_TEST)
   ENDIF()
 
   IF(NOT(WIN32))
-    SET(ENV{PATH} "$ENV{PATH}:${BINARY_DIR}/meshgen2d/src/:${BINARY_DIR}/fem/src")
+    SET(ENV{PATH} "${BINARY_DIR}/meshgen2d/src/:${BINARY_DIR}/fem/src:$ENV{PATH}")
   ENDIF(NOT(WIN32))
 
   # Clean up old result files
@@ -125,17 +125,17 @@ MACRO(RUN_ELMER_TEST)
   ENDIF()
 
   IF(WIN32)
-    SET(ENV{PATH} "$ENV{PATH};${BINARY_DIR}/meshgen2d/src/;${BINARY_DIR}/fem/src")
+    SET(ENV{PATH} "${BINARY_DIR}/meshgen2d/src/;${BINARY_DIR}/fem/src;$ENV{PATH}")
     GET_FILENAME_COMPONENT(COMPILER_DIRECTORY ${CMAKE_Fortran_COMPILER} PATH)
-    SET(ENV{PATH} "$ENV{PATH};${COMPILER_DIRECTORY};$ENV{ELMER_HOME};$ENV{ELMER_LIB};${BINARY_DIR}/fhutiter/src;${BINARY_DIR}/matc/src;${BINARY_DIR}/mathlibs/src/arpack")
+    SET(ENV{PATH} "$ENV{ELMER_HOME};$ENV{ELMER_LIB};${BINARY_DIR}/fhutiter/src;${BINARY_DIR}/matc/src;${BINARY_DIR}/mathlibs/src/arpack;${BINARY_DIR}/mathlibs/src/parpack;${COMPILER_DIRECTORY};$ENV{PATH}")
   ENDIF(WIN32)
 
   IF(WITH_MPI)
-    EXECUTE_PROCESS(COMMAND ${MPIEXEC} ${MPIEXEC_NUMPROC_FLAG} ${MPIEXEC_NTASKS} ${MPIEXEC_PREFLAGS} ${ELMERSOLVER_BIN} ${MPIEXEC_POSTFLAGS}
+    EXECUTE_PROCESS(COMMAND "${MPIEXEC}" ${MPIEXEC_NUMPROC_FLAG} ${MPIEXEC_NTASKS} ${MPIEXEC_PREFLAGS} ${ELMERSOLVER_BIN} ${MPIEXEC_POSTFLAGS}
       OUTPUT_VARIABLE TEST_STDOUT_VARIABLE
       ERROR_VARIABLE TEST_ERROR_VARIABLE)
-      FILE(WRITE "test-stdout_${MPIEXEC_NTASKS}.log" "${TEST_STDOUT_VARIABLE}"  )
-      FILE(WRITE "test-stderr_${MPIEXEC_NTASKS}.log"  "${TEST_STDERR_VARIABLE}"  )
+      FILE(WRITE "test-stdout_${MPIEXEC_NTASKS}.log" "${TEST_STDOUT_VARIABLE}")
+      FILE(WRITE "test-stderr_${MPIEXEC_NTASKS}.log" "${TEST_STDERR_VARIABLE}")
   ELSE()
     EXECUTE_PROCESS(COMMAND ${ELMERSOLVER_BIN}
       OUTPUT_VARIABLE TEST_STDOUT_VARIABLE
@@ -167,13 +167,13 @@ MACRO(EXECUTE_ELMER_SOLVER SIFNAME)
   SET(ENV{ELMER_LIB} "${BINARY_DIR}/fem/src/modules")
 
   IF(NOT(WIN32))
-    SET(ENV{PATH} "$ENV{PATH}:${BINARY_DIR}/meshgen2d/src/:${BINARY_DIR}/fem/src")
+    SET(ENV{PATH} "${BINARY_DIR}/meshgen2d/src/:${BINARY_DIR}/fem/src:$ENV{PATH}")
   ENDIF(NOT(WIN32))
 
   IF(WIN32)
-    SET(ENV{PATH} "$ENV{PATH};${BINARY_DIR}/meshgen2d/src/;${BINARY_DIR}/fem/src")
+    SET(ENV{PATH} "${BINARY_DIR}/meshgen2d/src/;${BINARY_DIR}/fem/src;$ENV{PATH}")
     GET_FILENAME_COMPONENT(COMPILER_DIRECTORY ${CMAKE_Fortran_COMPILER} PATH)
-    SET(ENV{PATH} "$ENV{PATH};${COMPILER_DIRECTORY};$ENV{ELMER_HOME};$ENV{ELMER_LIB};${BINARY_DIR}/fhutiter/src;${BINARY_DIR}/matc/src;${BINARY_DIR}/mathlibs/src/arpack")
+    SET(ENV{PATH} "$ENV{ELMER_HOME};$ENV{ELMER_LIB};${BINARY_DIR}/fhutiter/src;${BINARY_DIR}/matc/src;${BINARY_DIR}/mathlibs/src/arpack;${BINARY_DIR}/mathlibs/src/parpack;${COMPILER_DIRECTORY};$ENV{PATH}")
   ENDIF(WIN32)
 
   EXECUTE_PROCESS(COMMAND ${ELMERSOLVER_BIN} ${SIFNAME}
@@ -187,17 +187,17 @@ MACRO(EXECUTE_ELMER_SOLVER_MPI SIFNAME)
   SET(ENV{ELMER_LIB} "${BINARY_DIR}/fem/src/modules")
 
   IF(NOT(WIN32))
-    SET(ENV{PATH} "$ENV{PATH}:${BINARY_DIR}/meshgen2d/src/:${BINARY_DIR}/fem/src")
+    SET(ENV{PATH} "${BINARY_DIR}/meshgen2d/src/:${BINARY_DIR}/fem/src:$ENV{PATH}")
   ENDIF(NOT(WIN32))
 
   IF(WIN32)
-    SET(ENV{PATH} "$ENV{PATH};${BINARY_DIR}/meshgen2d/src/;${BINARY_DIR}/fem/src")
+    SET(ENV{PATH} "${BINARY_DIR}/meshgen2d/src/;${BINARY_DIR}/fem/src;$ENV{PATH}")
     GET_FILENAME_COMPONENT(COMPILER_DIRECTORY ${CMAKE_Fortran_COMPILER} PATH)
-    SET(ENV{PATH} "$ENV{PATH};${COMPILER_DIRECTORY};$ENV{ELMER_HOME};$ENV{ELMER_LIB};${BINARY_DIR}/fhutiter/src;${BINARY_DIR}/matc/src;${BINARY_DIR}/mathlibs/src/arpack")
+    SET(ENV{PATH} "$ENV{ELMER_HOME};$ENV{ELMER_LIB};${BINARY_DIR}/fhutiter/src;${BINARY_DIR}/matc/src;${BINARY_DIR}/mathlibs/src/arpack;${BINARY_DIR}/mathlibs/src/parpack;$ENV{PATH};${COMPILER_DIRECTORY};$ENV{PATH}")
   ENDIF(WIN32)
 
   IF(WITH_MPI)
-    EXECUTE_PROCESS(COMMAND ${MPIEXEC} ${MPIEXEC_NUMPROC_FLAG} ${MPIEXEC_NTASKS} ${MPIEXEC_PREFLAGS} ${ELMERSOLVER_BIN} ${SIFNAME}
+    EXECUTE_PROCESS(COMMAND "${MPIEXEC}" ${MPIEXEC_NUMPROC_FLAG} ${MPIEXEC_NTASKS} ${MPIEXEC_PREFLAGS} ${ELMERSOLVER_BIN} ${SIFNAME}
       OUTPUT_FILE "${SIFNAME}-stdout_${MPIEXEC_NTASKS}.log"
       ERROR_FILE "${SIFNAME}-stderr_${MPIEXEC_NSTAKS}.log")
   ELSE()