remove unnecessary variable
cosmetics
improve compatibility with older Pango versions
Corrected indexname in removal statement.
in xdrop use long values instead of int to prevent overflows.
Move init and free of fronts and big_t to outermost loop.
Move gcd from arbitscores to arbitdistances.
Combine fronts. big_t, scores and distance in resouce object.
Remove debugging printf's
Added missing calls to gt_xdrop_resources_delete to fix leaks.
Rename identifier according to Gt-Standards.
Deleted empty code lines.
Added reference to querysequence in Querymatch.
Added Xdrop-extension to query matching.
Extend to the left only if length is at least 1.
Eliminate spacedef.h and use ma_api.h-macros.
Add GtFronresource for Greedyedist computation
Put read access to front into access function.
Put write access to front into function.
Simplify the xdrop-code.