Add meta.branch to a bunch of packages

Gives better results in the monitor

pkgs/development/compilers/scala/2.10.nix

@@ -33,5 +33,6 @@ stdenv.mkDerivation rec {
     homepage = http://www.scala-lang.org/;
     license = "BSD";
     platforms = stdenv.lib.platforms.all;
+    branch = "2.10";
   };
 }

pkgs/development/compilers/scala/2.9.nix

@@ -30,5 +30,6 @@ stdenv.mkDerivation rec {
     homepage = http://www.scala-lang.org/;
     license = "BSD";
     platforms = stdenv.lib.platforms.all;
+    branch = "2.9";
   };
 }

pkgs/development/libraries/libsigcxx/1.2.nix

@@ -13,5 +13,6 @@ stdenv.mkDerivation rec {
   meta = {
     homepage = http://libsigc.sourceforge.net/;
     description = "A typesafe callback system for standard C++";
+    branch = "1.2";
   };
 }

pkgs/development/libraries/libsigsegv/2.5.nix

@@ -11,6 +11,7 @@ stdenv.mkDerivation rec {
   meta = {
     homepage = http://libsigsegv.sf.net;
     description = "A library for handling page faults in user mode";
+    branch = "2.5";
   };
 
   doCheck = true;

pkgs/development/libraries/qwt/6.nix

@@ -23,5 +23,6 @@ stdenv.mkDerivation rec {
     license = stdenv.lib.licenses.qwt;
     platforms = platforms.linux;
     maintainers = [ maintainers.bjornfor ];
+    branch = "6";
   };
 }

pkgs/development/libraries/readline/5.x.nix

@@ -11,5 +11,7 @@ stdenv.mkDerivation {
   propagatedBuildInputs = [ncurses];
 
   patches = stdenv.lib.optional stdenv.isDarwin ./shobj-darwin.patch;
+  meta = {
+    branch = "5";
+  };
 }
-

pkgs/development/libraries/readline/6.2.nix

@@ -49,6 +49,7 @@ stdenv.mkDerivation (rec {
     license = stdenv.lib.licenses.gpl3Plus;
 
     maintainers = [ stdenv.lib.maintainers.ludo ];
+    branch = "6.2";
   };
 }
 

pkgs/development/libraries/readline/6.3.nix

@@ -54,5 +54,6 @@ stdenv.mkDerivation rec {
     maintainers = [ maintainers.ludo ];
 
     platforms = platforms.unix;
+    branch = "6.3";
   };
 }

pkgs/development/tools/misc/texinfo/4.13a.nix

@@ -36,5 +36,6 @@ stdenv.mkDerivation rec {
     license = stdenv.lib.licenses.gpl3Plus;
 
     homepage = http://www.gnu.org/software/texinfo/;
+    branch = "4.13";
   };
 }

pkgs/development/tools/misc/texinfo/5.2.nix

@@ -39,5 +39,6 @@ stdenv.mkDerivation rec {
       need revise only that one document.  The Texinfo system is
       well-integrated with GNU Emacs.
     '';
+    branch = "5.2";
   };
 }

pkgs/tools/typesetting/tex/pgf/1.x.nix

@@ -13,4 +13,7 @@ stdenv.mkDerivation {
     mkdir -p $out/share/texmf-nix
     cp -prd * $out/share/texmf-nix
   ";
+  meta = {
+    branch = "1";
+  };
 }

pkgs/tools/typesetting/tex/pgf/2.x.nix

@@ -14,4 +14,7 @@ stdenv.mkDerivation {
     mkdir -p $out/share/texmf-nix
     cp -prd * $out/share/texmf-nix
   ";
+  meta = {
+    branch = "2";
+  };
 }

pkgs/tools/typesetting/tex/pgf/3.x.nix

@@ -23,4 +23,7 @@ stdenv.mkDerivation {
     mkdir -p $out/share/texmf-nix
     cp -prd * $out/share/texmf-nix
   ";
+  meta = {
+    branch = "3";
+  };
 }