treewide: Per RFC45, remove all unquoted URLs

pkgs/development/compilers/llvm/5/clang/default.nix

@@ -83,7 +83,7 @@ let
 
     meta = {
       description = "A c, c++, objective-c, and objective-c++ frontend for the llvm compiler";
-      homepage    = http://llvm.org/;
+      homepage    = "http://llvm.org/";
       license     = stdenv.lib.licenses.ncsa;
       platforms   = stdenv.lib.platforms.all;
     };

pkgs/development/compilers/llvm/5/libc++/default.nix

@@ -45,7 +45,7 @@ stdenv.mkDerivation {
   ];
 
   meta = {
-    homepage = http://libcxx.llvm.org/;
+    homepage = "http://libcxx.llvm.org/";
     description = "A new implementation of the C++ standard library, targeting C++11";
     license = with stdenv.lib.licenses; [ ncsa mit ];
     platforms = stdenv.lib.platforms.unix;

pkgs/development/compilers/llvm/5/libc++abi.nix

@@ -42,7 +42,7 @@ stdenv.mkDerivation {
     '';
 
   meta = {
-    homepage = http://libcxxabi.llvm.org/;
+    homepage = "http://libcxxabi.llvm.org/";
     description = "A new implementation of low level support for a standard C++ library";
     license = with stdenv.lib.licenses; [ ncsa mit ];
     maintainers = with stdenv.lib.maintainers; [ vlstill ];

pkgs/development/compilers/llvm/5/lld.nix

@@ -25,7 +25,7 @@ stdenv.mkDerivation {
 
   meta = {
     description = "The LLVM Linker";
-    homepage    = http://lld.llvm.org/;
+    homepage    = "http://lld.llvm.org/";
     license     = stdenv.lib.licenses.ncsa;
     platforms   = stdenv.lib.platforms.all;
     badPlatforms = [ "x86_64-darwin" ];

pkgs/development/compilers/llvm/5/lldb.nix

@@ -50,7 +50,7 @@ stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "A next-generation high-performance debugger";
-    homepage    = http://llvm.org/;
+    homepage    = "http://llvm.org/";
     license     = licenses.ncsa;
     platforms   = platforms.all;
   };

pkgs/development/compilers/llvm/5/llvm.nix

@@ -151,7 +151,7 @@ stdenv.mkDerivation ({
   requiredSystemFeatures = [ "big-parallel" ];
   meta = {
     description = "Collection of modular and reusable compiler and toolchain technologies";
-    homepage    = http://llvm.org/;
+    homepage    = "http://llvm.org/";
     license     = stdenv.lib.licenses.ncsa;
     maintainers = with stdenv.lib.maintainers; [ lovek323 raskin dtzWill ];
     platforms   = stdenv.lib.platforms.all;

pkgs/development/compilers/llvm/5/openmp.nix

@@ -19,7 +19,7 @@ stdenv.mkDerivation {
 
   meta = {
     description = "Components required to build an executable OpenMP program";
-    homepage    = http://openmp.llvm.org/;
+    homepage    = "http://openmp.llvm.org/";
     license     = stdenv.lib.licenses.mit;
     platforms   = stdenv.lib.platforms.all;
   };