Codechange: automatic adding of _t to (u)int types, and WChar to char32_t

for i in `find src -type f|grep -v 3rdparty/fmt|grep -v 3rdparty/catch2|grep -v 3rdparty/opengl|grep -v stdafx.h`; do sed 's/uint16& /uint16 \&/g;s/int8\([ >*),;[]\)/int8_t\1/g;s/int16\([ >*),;[]\)/int16_t\1/g;s/int32\([ >*),;[]\)/int32_t\1/g;s/int64\([ >*),;[]\)/int64_t\1/g;s/ uint32(/ uint32_t(/g;s/_uint8_t/_uint8/;s/Uint8_t/Uint8/;s/ft_int64_t/ft_int64/g;s/uint64$/uint64_t/;s/WChar/char32_t/g;s/char32_t char32_t/char32_t WChar/' -i $i; done

Fix #6574: Remove go to hangar orders when rebuilding airport

When replacing an airport with another, cancel current orders of type 'go to depot' from aircraft still heading to it if the rebuilt airport doesn't have a hangar (helicopter vs heliport), or if the airplane can't land on the rebuilt airport (airplane vs helistation).

Removes 'go to hangar' orders from all aircraft when replacing an airport with hangar with another without hangar (heliport).

(svn r14395) -Fix [FS#2285]: crashes and GUI desyncs when order is deleted/modified while the timetable window is open
-Fix: close any dropdown and child windows in the Order and Timetable windows when selected order is deselected, deleted, ...

(svn r12913) -Add: ability to backup and restore a player's economic data and data for a vehicle (or chain of vehicles)
Autoreplace uses this with the following benefits:
-Mass autoreplace (the button in the depot window) will now estimate costs correctly
-Autoreplace now either replaces correctly or manages to keep the original vehicle (no more broken trains)
Thanks to Ammler for testing this