add deprecation definition for FloatingPoint, NEWS entry.

Author: StefanKarpinski

NEWS.md

@@ -92,6 +92,8 @@ Language changes
 
   * `String` is renamed to `AbstractString` ([#8872]).
 
+  * `FloatingPoint` is renamed to `AbstractFloat` ([#12162]).
+
   * `None` is deprecated; use `Union{}` instead ([#8423]).
 
   * `Nothing` (the type of `nothing`) is renamed to `Void` ([#8423]).
@@ -1542,3 +1544,4 @@ Too numerous to mention.
 [#12034]: https://github.com/JuliaLang/julia/issues/12034
 [#12087]: https://github.com/JuliaLang/julia/issues/12087
 [#12137]: https://github.com/JuliaLang/julia/issues/12137
+[#12162]: https://github.com/JuliaLang/julia/issues/12162

base/deprecated.jl

@@ -763,3 +763,6 @@ function nonboolean_all(itr)
 end
 
 @deprecate iseltype(x,T)  eltype(x) <: T
+
+const FloatingPoint = AbstractFloat
+export FloatingPoint