This routine will wet the neighbors sides of the neighbor node
col_int is the integer in which the flags for this color are encoded.
col_bit is the 0th bit of this color within the integer.
Thus, for the first color it should be col_int = 1, col_bit = 0.
iNode is the index of the node whose neighbors are to be marked as
wet. Note, that this will be done unconditionally, that is regardless of
the state in iNode itself.
Be aware, that the indices of neighbor need to be available in the linkpos
array when calling this routine!
Nodes of different colours represent the following:
Solid arrows point from a procedure to one which it calls. Dashed
arrows point from an interface to procedures which implement that interface.
This could include the module procedures in a generic interface or the
implementation in a submodule of an interface in a parent module.