* contrib/hbide/resources/tabreadonly.png
! Changed: to reflect clearly visible readonly status.
* contrib/hbide/ideedit.prg
* contrib/hbide/ideeditor.prg
+ Implemented: <MainMenu><Edit><Switch ReadOnly Mode> plus
file's "readonly" attribute obtained by hb_fGetAttr() == 33
( please correct me if it is not OK on all systems ).
"Switch ReadOnly Mode" toggles the readonly status of the
current source in focus only if on disk attribute is normal.
ReadOnly status is permanent if disk attribute equals 33 and
cannot be toggled.
While in readonly mode, cut/paste/alter operation are suspened,
only copy operation is supported. Copy can be performed with
mouse and keyboard both and all three modes are available.