params/mirrors cleaning + usable test suite (issues #11 and #10)

Context

This pull request solves:

• issue #11 : "The test suite lasts too long".
• issue #10 : "Several tests still display windows even with "nogui" option".

Modifications

root / fwk

• mpirun.py and run.py have been merged. These files were huge copy/paste of each other. The purpose was to be sure that the workspace folder was created by rank#0 process. Now, run.py checks whether MPI is used or not and does what is expected (automatically).
• wutils used setand grep unix command to display environment variables. This code has been rewritten in order to work also on windows.
• Variables such as OMP_NUM_THREADS or MKL_DYNAMIC are now set to predefined and controlled values if (and only if) they are not previously set by the user. For example OMP_NUM_THREADS is set to 1 if OMP_NUM_THREADS does not appear in the list of environment variables.

fdtd

• The tests named fdtd1d_1c and fdtd1d_1d have been modified in order to:
  • compute something even if --nogui is set.
  • completely hide matplotlib commands when --nogui is set (these tests failed if they were run in a ssh terminal without X display)

mirrors

• Some old files have been put in a new mirrors/attic folder: imported_10x10.py, imported_30x30.py, loop_old.py, loop_old2.py
• Some broken tests have been moved to mirrors/broken: NISP_Leg_cond.py (too old matplotlib), mirrors01.py, mirrors03.py, mirrors_test_battery.py (bad mesh with wrong normals)
• A folder named figs has been created for the scripts producing figures for reports: LSP*.py, numpy_matplotlib*
• mirrors/mirror_ss.py: the only working model for mirror! It has been cleaned. An "nogui" option has been added in the parameter list. Its defaut size has been decreased.
• mirror source code:
  • removal of unneeded header
  • basic code formatting
  • removal of unused code
  • additional comments/doc
• Tests:
  • mirrors02.py has been deleted (same as mirrors/mirror_ss.py and mirrors/tests/test1/simple.py )
  • mirrors/tests/test1/simple.py was moved to mirrors/tests
  • all loop*.py have been reduced in size so that they run in a few seconds.
  • all loop*.py can be run either with GUI or not with the desired result.

Test suite

• The test suite now runs in less than a minute (with 6 cores).
• It has been tested on ubuntu and windows

mirrors/tests/mirrors02.geo

-// $Id$
-// fichier de donnees gmsh
-
-
-//X=250m
-//Y=250m
-//Z=250m
-
-L = 250;
-L_1 = 250;
-H = 50;
-H_1 = 30;
-W = 150;
-
-nL_1 = 16; //31
-nL = 16; //31
-nH = 16; //21
-nH_1 = 11; //11
-nW = 11; //25
-
-lc = 1;
-
-Point(1) = { 0,   0, 0, lc};
-Point(2) = { 0,   0, H, lc};
-Point(3) = { L_1, 0, 0, lc};
-Point(4) = { L_1, 0, H, lc};
-Point(5) = { L_1, 0, H+H_1, lc};
-Point(6) = { L+L_1, 0, 0, lc};
-Point(7) = { L+L_1, 0, H, lc};
-Point(8) = { L+L_1, 0, H+H_1, lc};
-
-Line(1) = {2, 1};
-Line(2) = {1, 3};
-Line(3) = {4, 2};
-Line(4) = {3, 4};
-Line(5) = {4, 5};
-Line(6) = {3, 6};
-Line(7) = {7, 4};
-Line(8) = {5, 8};
-Line(9) = {6, 7};
-Line(10) = {8, 7};
-
-Transfinite Line {6,7,8} = nL Using Progression 1;
-Transfinite Line {2,3} = nL_1 Using Progression 1;
-Transfinite Line {1,4,9} = nH Using Progression 1;
-Transfinite Line {5,10} = nH_1 Using Progression 1;
-
-Line Loop(11) = {2, 4, 3, 1};
-Plane Surface(12) = {11};
-Transfinite Surface {12};
-Recombine Surface {12};
-
-Line Loop(13) = {6,9,7,-4};
-Plane Surface(14) = {13};
-Transfinite Surface {14};
-Recombine Surface {14};
-
-Line Loop(15) = {7, 10, 8, 5};
-Plane Surface(16) = {15};
-Transfinite Surface {16};
-Recombine Surface {16};
-
-
-Extrude {0, W, 0} 
-{
-  Surface{12}; Layers{nW}; Recombine;
-}
-
-Extrude {0, W, 0} 
-{
-  Surface{14}; Layers{nW}; Recombine;
-}
-
-Extrude {0, W, 0} 
-{
-  Surface{16}; Layers{nW}; Recombine;
-}
-
-// physical entities
-
-Physical Line("Vertical clamped line") = {1};
-Physical Line("Horizontal clamped line") = {23};
-Physical Surface("Clamped Side") = {37};
-Physical Surface("Mirror Side") = {77};
-Physical Surface("Contact") = {55};
-Physical Volume("Holder") = {1, 2};
-Physical Volume("Mirror") = {3};
-
-
-
-