Various bug fixes and small features (#606)

* Fix stray cursor, integer overflows and other bugs

* check for getenvlist error, shorten code

* fix cascade, set info_line before auth, make code clearer and a bug fix

* Add option to turn on numlock at startup

* Fix setting numlock

* Update build.zig

* Custom info text

* Shift+Tab for previous input

* update changelog and res/config

* Some fixes

* update build.zig

* update build.zig again

* Fix xauth command for some shells and fix building in ReleaseSafe

* Use git describe to get dev version str

* revert change to getLockState (it broke the doom animation)

* add new ly error messages. Only try to make path for pam/exe during install when dest_directory is defined + print warning on error.

* add warning message for workaround

res/config.ini

@@ -47,6 +47,12 @@ fg = 8
 # Border color
 border_fg = 8
 
+# Title to show at the top of the main box
+box_title = null
+
+# Initial text to show on the info line (Defaults to hostname)
+initial_info_text = null
+
 # Blank main box background
 # Setting to false will make it transparent
 blank_box = true
@@ -119,6 +125,9 @@ path = /sbin:/bin:/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin
 # Event timeout in milliseconds
 min_refresh_delta = 5
 
+# Set numlock on/off at startup
+numlock = false
+
 # Service name (set to ly to use the provided pam config file)
 service_name = ly