Dropped support for all EOL x86/x64 Ubuntu distros to use Portable PyPy instead, per issue #925 comments

plugins/python-build/share/python-build/pypy2.7-5.8.0

@@ -1,6 +1,6 @@
 case "$(pypy_architecture 2>/dev/null || true)" in
 "linux" )
-  if require_distro "Ubuntu 12.04" "Ubuntu 12.10" "Ubuntu 13.04" "Ubuntu 13.10" "Ubuntu 14.04" 1>/dev/null 2>&1; then
+  if require_distro "Ubuntu 14.04" 1>/dev/null 2>&1; then
     install_package "pypy2-v5.8.0-linux32" "https://bitbucket.org/pypy/pypy/downloads/pypy2-v5.8.0-linux32.tar.bz2#a0b125a5781f7e5ddfc3baca46503b14f4ee6a0e234e8d72bfcf3afdf4120bef" "pypy" verify_py27 ensurepip
   fi
   ;;
@@ -17,7 +17,7 @@ case "$(pypy_architecture 2>/dev/null || true)" in
   fi
   ;;
 "linux64" )
-  if require_distro "Ubuntu 12.04" "Ubuntu 12.10" "Ubuntu 13.04" "Ubuntu 13.10" "Ubuntu 14.04" 1>/dev/null 2>&1; then
+  if require_distro "Ubuntu 14.04" 1>/dev/null 2>&1; then
     install_package "pypy2-v5.8.0-linux64" "https://bitbucket.org/pypy/pypy/downloads/pypy2-v5.8.0-linux64.tar.bz2#6274292d0e954a2609b15978cde6efa30942ba20aa5d2acbbf1c70c0a54e9b1e" "pypy" verify_py27 ensurepip
   else
     install_package "pypy-5.8-linux_x86_64-portable" "https://bitbucket.org/squeaky/portable-pypy/downloads/pypy-5.8.0-linux_x86_64-portable.tar.bz2#337fd7e947a74cb09253f5ff330fb1be471b1d7a64c2d0340ac387920e71bf3c" "pypy" verify_py27 ensurepip

plugins/python-build/share/python-build/pypy3.5-5.8.0

@@ -1,6 +1,6 @@
 case "$(pypy_architecture 2>/dev/null || true)" in
 "linux64" )
-  if require_distro "Ubuntu 12.04" "Ubuntu 12.10" "Ubuntu 13.04" "Ubuntu 13.10" "Ubuntu 14.04" 1>/dev/null 2>&1; then
+  if require_distro "Ubuntu 14.04" 1>/dev/null 2>&1; then
     install_package "pypy3-v5.8.0-linux64" "https://bitbucket.org/pypy/pypy/downloads/pypy3-v5.8.0-linux64.tar.bz2#57d871a7f1135719c138cee4e3533c3275d682a76a40ff668e95150c65923035" "pypy" verify_py35 ensurepip
   else
     install_package "pypy3.5-5.8-beta-linux_x86_64-portable" "https://bitbucket.org/squeaky/portable-pypy/downloads/pypy3.5-5.8.0-beta-linux_x86_64-portable.tar.bz2#76c2c4b2846e38d2b4846d4b5f9dc0bd9fd7a9b1f04beb92975ae090ad390d75" "pypy" verify_py35 ensurepip
@@ -10,7 +10,7 @@ case "$(pypy_architecture 2>/dev/null || true)" in
   { echo
     colorize 1 "ERROR"
     echo ": The binary distribution of PyPy is not available for $(pypy_architecture 2>/dev/null || true)."
-    echo "try 'pypy3.5-5.8-src' to build from source."
+    echo "try 'pypy3.5-5.8.0-src' to build from source."
     echo
   } >&2
   exit 1