Added a header file ll_upwards.h that makes public the functions:  skipholes()  speculate_skip()  PF_SIBLING_PROBES 64
Added a header file ll_upwards.h that makes public the functions:
 skipholes()
 speculate_skip()
 PF_SIBLING_PROBES 64

Changed tsorted = 1 to tsorted = GDK_SORTED

Removed alot of trailing spaces (sorry for the spam of update lines... it
was done automatically and didn't made sense to re-add the spaces)

zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb,zyzyis/monetdb