brought all changes up to more recent branch of X3D. Can't get tests to compile and have ignored i2dsim option

# Conflicts:
#	Makefile
#	decomp2d/io.f90
#	src/BC-dbg-schemes.f90
#	src/CMakeLists.txt
#	src/Case-Cylinder-wake.f90
#	src/acl_utils.f90
#	src/case.f90
#	src/forces.f90
#	src/genepsi3d.f90
#	src/ibm.f90
#	src/module_param.f90
#	src/navier.f90
#	src/parameters.f90
#	src/tools.f90
#	src/xcompact3d.f90

* Add single precision verification on TGV

* Add Pipe and PTBL to test and examples

Fix variable names in restart

Fix Force loop for the wind turbine case

Use DEBG only for dev builds

Update parameters.f90

Update tests continue

Split the tests from the examples and update of the related .md files