Fix parsing of precompiled macro definitions

Passing preprocessor definitions forward into library cells was broken
by this bug in processing the precompiled macro values that were written
by the main preprocessor.

ivlpp/lexor.lex

@@ -1635,6 +1635,8 @@ void load_precompiled_defines(FILE* src)
 
         name = cp;
 
+	*cp++ = ch;
+
         while ((ch = fgetc(src)) != EOF && ch != ':')
             *cp++ = ch;