[Docs] Suggest using release build type for Meson (#1122)

We do the same also for CMake

Author: giordano

docs/src/build_tips.md

@@ -63,7 +63,7 @@ The toolchain file sets up several CMake environment variables for better cross-
 BinaryBuilder supports also building with Meson.  Since this is going to be a cross-compilation, you have to specify a Meson cross file:
 
 ```sh
-meson --cross-file="${MESON_TARGET_TOOLCHAIN}"
+meson --cross-file="${MESON_TARGET_TOOLCHAIN}" --buildtype=release
 ```
 
 After configuring the project with `meson`, you can then build and install it with

src/wizard/hints.jl

@@ -78,7 +78,7 @@ function provide_hints(state::WizardState, path::AbstractString)
                 print(state.outs,   "    This file is likely input to Meson. ")
                 println(state.outs,   "The recommended option for Meson is")
                 println(state.outs)
-                printstyled(state.outs, "      meson --cross-file=\${MESON_TARGET_TOOLCHAIN}", bold=true)
+                printstyled(state.outs, "      meson --cross-file=\${MESON_TARGET_TOOLCHAIN} --buildtype=release", bold=true)
                 println(state.outs)
                 println(state.outs)
                 println(state.outs, "    followed by `ninja` and `ninja install`. Since the prefix variable")