libedit dependency/build issue

[anevilyak]

Since the recent changes to outsource ncurses, something seems to have been broken with regards to the declarations of libedit's dependencies. Attempting to build, something like Debugger results in libedit getting rebuilt/relinked every single time, even if no files have been changed between build invocations. This can be observed even with a cleanly configured generated folder, and appears to occur regardless of host platform. If relevant, this was observed with the x86 build and hrev48565.

[pulkomandy]

Fixed in hrev48732.