Broken symlinks are not uninstalled.

[SergTormozov]

I run into the problem that broken symlinks are not uninstalled. it may happen for example when link target is uninstalled before symlink. I found that it happens because ![file exists $file] is always true for broken symlinks
(see ::InstallJammer::actions::UninstallSelectedFiles) so they are just skipped during uninstall.

So far I corrected the code as follow (in my copy of installjammer)

---- installjammer\lib\Actions\UninstallActions\UninstallSelectedFiles.action ----
--- old ---
if {![file exists $file]} { continue }
if {[file type $file] eq "directory"} { continue }
--new
if {[catch {file lstat $file s} error]} { continue }

if {$s(type) eq "directory"} { continue }

Thanks!
-- Serg