READMEs: switch back to still valid "ecl -shell" (for older ECLs)

README-1.txt

@@ -90,7 +90,7 @@ BUILD
 
 1) In src/ run:
 
-    ecl --shell make-eql-lib.lisp
+    ecl -shell make-eql-lib.lisp
 
 2) Do:
 

README-2-REBUILD.txt

@@ -16,7 +16,7 @@ REBUILD STEPS (on every upgrade of: ECL, Qt, EQL)
 
   for readline (Unix):
 
-    ecl --compile src/lisp/ecl-readline.lisp
+    ecl -compile src/lisp/ecl-readline.lisp
 
 Optionally (integrate wrapper functions):
 

helper/README.txt

@@ -10,8 +10,8 @@ If you miss a Qt class, add it in ./my-class-lists/<module>/:
     n-names.lisp: non QObject derived classes
 
 Run these commands in order: (after setting the *qt-documentation-path* in share.lisp)
-    ecl --shell parse.lisp
-    ecl --shell generate.lisp
+    ecl -shell parse.lisp
+    ecl -shell generate.lisp
 
 Take a look at missing-types.txt: 
 These types are currently not available, as they must be integrated manually (by the author).