Use an scm rockspec instead of storing release rockspecs

Allows installing dev version of serpent using `luarocks make`.
There is no reason to store release rockspecs in the repo, they can be
generated using `luarocks new-version --tag <version>`.

misc/serpent-0.19-1.rockspec

@@ -1,27 +0,0 @@
-package = "serpent"
-version = "0.19-1"
-source = {
-  url = "git://github.com/pkulchenko/serpent.git",
-  tag = "0.19"
-}
-
-description = {
-  summary = "Lua serializer and pretty printer",
-  homepage = "https://github.com/pkulchenko/serpent",
-  maintainer = "Paul Kulchenko <paul@kulchenko.com>",
-  license = "MIT",
-}
-
-dependencies = {
-  "lua >= 5.1",
-}
-
-build = {
-  type = "builtin",
-  modules = {
-    ["serpent"] = "src/serpent.lua",
-  },
-  copy_directories = { "t" },
-}
-
--- vim: ft=lua

misc/serpent-0.21-1.rockspec

@@ -1,25 +0,0 @@
-package = "serpent"
-version = "0.21-1"
-source = {
-  url = "git://github.com/pkulchenko/serpent.git",
-  tag = "0.21"
-}
-
-description = {
-  summary = "Lua serializer and pretty printer",
-  homepage = "https://github.com/pkulchenko/serpent",
-  maintainer = "Paul Kulchenko <paul@kulchenko.com>",
-  license = "MIT",
-}
-
-dependencies = {
-  "lua >= 5.1",
-}
-
-build = {
-  type = "builtin",
-  modules = {
-    ["serpent"] = "src/serpent.lua",
-  },
-  copy_directories = { "t" },
-}

misc/serpent-0.22-1.rockspec

@@ -1,25 +0,0 @@
-package = "serpent"
-version = "0.22-1"
-source = {
-  url = "git://github.com/pkulchenko/serpent.git",
-  tag = "0.22"
-}
-
-description = {
-  summary = "Lua serializer and pretty printer",
-  homepage = "https://github.com/pkulchenko/serpent",
-  maintainer = "Paul Kulchenko <paul@kulchenko.com>",
-  license = "MIT",
-}
-
-dependencies = {
-  "lua >= 5.1",
-}
-
-build = {
-  type = "builtin",
-  modules = {
-    ["serpent"] = "src/serpent.lua",
-  },
-  copy_directories = { "t" },
-}

misc/serpent-0.23-1.rockspec

@@ -1,25 +0,0 @@
-package = "serpent"
-version = "0.23-1"
-source = {
-  url = "git://github.com/pkulchenko/serpent.git",
-  tag = "0.23"
-}
-
-description = {
-  summary = "Lua serializer and pretty printer",
-  homepage = "https://github.com/pkulchenko/serpent",
-  maintainer = "Paul Kulchenko <paul@kulchenko.com>",
-  license = "MIT",
-}
-
-dependencies = {
-  "lua >= 5.1",
-}
-
-build = {
-  type = "builtin",
-  modules = {
-    ["serpent"] = "src/serpent.lua",
-  },
-  copy_directories = { "t" },
-}

misc/serpent-0.24-1.rockspec

@@ -1,25 +0,0 @@
-package = "serpent"
-version = "0.24-1"
-source = {
-  url = "git://github.com/pkulchenko/serpent.git",
-  tag = "0.24"
-}
-
-description = {
-  summary = "Lua serializer and pretty printer",
-  homepage = "https://github.com/pkulchenko/serpent",
-  maintainer = "Paul Kulchenko <paul@kulchenko.com>",
-  license = "MIT",
-}
-
-dependencies = {
-  "lua >= 5.1, < 5.3",
-}
-
-build = {
-  type = "builtin",
-  modules = {
-    ["serpent"] = "src/serpent.lua",
-  },
-  copy_directories = { "t" },
-}

misc/serpent-0.25-1.rockspec

@@ -1,25 +0,0 @@
-package = "serpent"
-version = "0.25-1"
-source = {
-  url = "git://github.com/pkulchenko/serpent.git",
-  tag = "0.25"
-}
-
-description = {
-  summary = "Lua serializer and pretty printer",
-  homepage = "https://github.com/pkulchenko/serpent",
-  maintainer = "Paul Kulchenko <paul@kulchenko.com>",
-  license = "MIT",
-}
-
-dependencies = {
-  "lua >= 5.1, < 5.3",
-}
-
-build = {
-  type = "builtin",
-  modules = {
-    ["serpent"] = "src/serpent.lua",
-  },
-  copy_directories = { "t" },
-}

misc/serpent-0.26-1.rockspec

@@ -1,25 +0,0 @@
-package = "serpent"
-version = "0.26-1"
-source = {
-  url = "git://github.com/pkulchenko/serpent.git",
-  tag = "0.26"
-}
-
-description = {
-  summary = "Lua serializer and pretty printer",
-  homepage = "https://github.com/pkulchenko/serpent",
-  maintainer = "Paul Kulchenko <paul@kulchenko.com>",
-  license = "MIT",
-}
-
-dependencies = {
-  "lua >= 5.1, < 5.3",
-}
-
-build = {
-  type = "builtin",
-  modules = {
-    ["serpent"] = "src/serpent.lua",
-  },
-  copy_directories = { "t" },
-}

misc/serpent-0.27-1.rockspec

@@ -1,25 +0,0 @@
-package = "serpent"
-version = "0.27-1"
-source = {
-  url = "git://github.com/pkulchenko/serpent.git",
-  tag = "0.27"
-}
-
-description = {
-  summary = "Lua serializer and pretty printer",
-  homepage = "https://github.com/pkulchenko/serpent",
-  maintainer = "Paul Kulchenko <paul@kulchenko.com>",
-  license = "MIT",
-}
-
-dependencies = {
-  "lua >= 5.1, < 5.3",
-}
-
-build = {
-  type = "builtin",
-  modules = {
-    ["serpent"] = "src/serpent.lua",
-  },
-  copy_directories = { "t" },
-}

misc/serpent-0.30-1.rockspec

@@ -1,25 +0,0 @@
-package = "serpent"
-version = "0.30-1"
-source = {
-  url = "git://github.com/pkulchenko/serpent.git",
-  tag = "0.30"
-}
-
-description = {
-  summary = "Lua serializer and pretty printer",
-  homepage = "https://github.com/pkulchenko/serpent",
-  maintainer = "Paul Kulchenko <paul@kulchenko.com>",
-  license = "MIT",
-}
-
-dependencies = {
-  "lua >= 5.1, < 5.4",
-}
-
-build = {
-  type = "builtin",
-  modules = {
-    ["serpent"] = "src/serpent.lua",
-  },
-  copy_directories = { "t" },
-}

serpent-scm-1.rockspec

@@ -1,8 +1,7 @@
 package = "serpent"
-version = "0.28-1"
+version = "scm-1"
 source = {
   url = "git://github.com/pkulchenko/serpent.git",
-  tag = "0.28"
 }
 
 description = {