( n1 "<spaces>name" -- n2 )
Skip leading space delimiters. Parse name delimited by
a space. Offset is the first cell aligned value greater
than or equal to n1. n2 = offset + 1 cell.
Create a definition for name with the execution semantics
( addr1 -- addr2 )
Add the offset calculated during the compile-time action
to addr1 giving the address addr2.