subsurface: 4.5.97 -> 4.6.0 (#22615)

We do a few more things:

 - libmarble and libdivecomputer with the subsurface patches have both been
   inlined for 2 reasons:
   a) nobody else is using these forks
   b) they need to be updated in lockstep with subsurface

 - instead of building libmarble against qtquick1, we now build using
   qtquickcontrols (qtquick2)

 - getting rid of qtquick1 also allows us to use the default qt (currently 5.6)

 - we get rid of some hacks to deal with library dependencies

 - instead of manually overriding various phases, we simply use cmakeFlags to
   pass proper parameters

pkgs/development/libraries/libdivecomputer/subsurface.nix

@@ -1,25 +0,0 @@
-{ stdenv, fetchgit, autoreconfHook }:
-
-stdenv.mkDerivation rec {
-  name = "libdivecomputer-${version}";
-  version = "ssrf-0.5.0";
-
-  src = fetchgit {
-    url = "git://subsurface-divelog.org/libdc";
-    rev = "534dd2f34b8271b2a1cac0e3151bfdc81da40e47";
-    branchName = "Subsurface-branch";
-    sha256 = "0iw9pczmwqlfjlgrik79b2pd4lmipxhjzj60ysk8qzl3axadjycp";
-  };
-
-  nativeBuildInputs = [ autoreconfHook ];
-
-  enableParallelBuilding = true;
-
-  meta = with stdenv.lib; {
-    homepage = http://www.libdivecomputer.org;
-    description = "A cross-platform and open source library for communication with dive computers from various manufacturers";
-    maintainers = [ maintainers.mguentner ];
-    license = licenses.lgpl21;
-    platforms = platforms.all;
-  };
-}