tools/meson: update to 0.61.4

Override python to use the one in host instead of hostpkg. There's no
need to use the latter.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
(cherry picked from commit 19f3fcc884)

tools/meson/files/openwrt-cross.txt.in

@@ -6,6 +6,7 @@ strip = '@STRIP@'
 nm = '@NM@'
 pkgconfig = '@PKGCONFIG@'
 cmake = '@CMAKE@'
+python = '@PYTHON@'
 
 [built-in options]
 c_args = [@CFLAGS@]

tools/meson/files/openwrt-native.txt.in

@@ -3,6 +3,7 @@ c = [@CC@]
 cpp = [@CXX@]
 pkgconfig = '@PKGCONFIG@'
 cmake = '@CMAKE@'
+python = '@PYTHON@'
 
 [built-in options]
 c_args = [@CFLAGS@]