Paolo's fix for BerkeleyGW interface regarding the weights of k-points in the 'tpiba_b' and 'crystal_b' case

git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@11062 c92efa57-630b-4861-b058-cf58834340f0
BerkeleyGW interface: the band occupations are treated consistently with the rest of the code

git-svn-id: http://qeforge.qe-forge.org/svn/q-e/trunk/espresso@11063 c92efa57-630b-4861-b058-cf58834340f0