Macro Deflex-Reinit

Part of:

package lexical-contexts
( deflex-reinit var val &optional doc )
Declares var as a global lexical variable, and initializes it to val.
doc, if supplied, is taken as a documentation string. In some
implementations (e.g. Scieneer), locally rebinding the same name is not
permitted; in most, it is permitted but creates a new lexical variable,
with no effect on the global one.