Added STOP if q-vector for self-consistency is not the first in force-theorem loop. Fixes part of #246

Update postprocessInput.F90 Reverted 7b99468d as this leads to crashes in some cases (very strange...). Hopefully fixes #228

...this might not yet work in all computation modes.

...dirty implementation to get the GW interface running

Modified sorting routine to use secondary key and used this in several places to simplify sorting of LAPW, stars...

specify -DCPP_OLDINTEL to deactivate parts of the code that did
not compile; mainly the order of USE statements was changed or
ONLY was added to avoid confusion of the compiler.

Removed dimension%nn3d and dimension%nn2d variable and replaced them with the actual dimensions kimax+1,kimax2+1

Should fix #189. @zimmer please check!

...it is needed for the qfix call in optional/pldngen.

Bugfix in LO part. Should hopefully fix issues #173 #169 #168. @rost please verify and close issues.