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.
make headercheck parallel capable
add lrint alternative