and used by all codes,
as common latgen it has been used the one contained in CPV,
sice this version solve some problems related to left-handed cell
new common module ions_base with ionic basic variables
git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@247 c92efa57-630b-4861-b058-cf58834340f0