* Added charge and potential subcommands
  * Set sys.path[0]='' in __main__.py for fixing wrong imports
    when a command call is used

… the charge renamed and modified and tentative writecharge.py file created for handling different output formats.

some additional output files created with pp.x for Si added to check output formats

a dictionary added (struct_info) for storing and printing structural information in output

… and Cython)

…mismatch between pp.x and postqe results, it seems to me postqe results are fine)

…ure calculation.

Minor fixes in other parts.

…tion.

Minor fixes in other parts.

documentation updated and minor fixes.

…ulation.

…alculations.

Tentative GUI code removed. Some code (RGB, spectra) not integrated into postqe moved to new directory "extras". Cython dir and files renamed.

Readers for binary files removed. Readers for xml format removed (all reading is now done in the calculator).
File graphic.py (for plotting RGB and spectra) moved to extras.

this is the first step for allowing the charge class to store
data in reciprocal space.

 * added pyqe.so to data so that is copied on the install dir at
   installainstallation
 * fixed some syntax error in MANIFEST.in

  - Use multiline strings for help messages in cli.py
  - Fix xmlschema dependency version (now requires >= 1.0.0)

  - Is more clear to import ase.units from ase instead of postqe.
  - Fixed ase.units import in example1.py

  - Made the build script more manageable by setup
  - Added an argument parser
  - Added arguments --replace and --rebuild

  - Python 2 directives removed from Makefile
  - Custom commands for 'build_ext' and 'install'
  - Update README.rst

modify setup construction in order to use the next to be added POSTQE_DIR

until the necessary changes are commited to quantum espresso repository
the build script points to a temporary address.

the installation of some documentation files is temporarily committed
to allow the usage of virtualenv

* downloads and compiles pyqe only if it doesn't fing the right .so file
* ase subdirectory in copied on build on installation

and fixing some examples

  - Other test scripts have still to be fixed

* splitted in 3 functions to save memory amap
  - get_wf_attributes to read the attributes
  - get_wavefunctions to read one or more wave functions from the file
  - get_wfc_miller_indices to read the Miller Indices

 Changes to be committed:
	modified:   postqe/readutils.py

  - Full clean of dos.py and eos.py modules

  - Under development, full build test with UtilXLib/mp_base.f90

  - Preprocessed files .fpp in their origin directory.

  - QE_TOPDIR not set: download latest QE in project subdir
  - Clean setup.py and postqe/fortran/Makefile

  - Use --skip=neqq for excluding functions contained in at2ibrav
  - Change _pyqe import in pyqe.py wrapper (import in a package)

  - Based on build_temp dir
  - Do not clean every run (use setup.py clean instead)
  - Add PW_SOURCES to Makefile

  - With 'clean --all' also removes extension modules from postqe/
  - Refine missing extension modules check

* added possibility for specifying filename in input and read an
  arbitrary xml file
* default file  `prefix.save/data-file-schema.xml` determined using the
  label

* format compatibility in get_occupations and get_eigenvalues
* unit conversion in get_fermi_level and get_eigenvalues

  - get_label() helper function involved for prefix
  - QECalculator involved for label