enforce linux packages to be installed only on systems with glibc >= 2.31

Author: alemuntoni

setup.py

@@ -33,7 +33,7 @@ def get_tag(self):
             if platform.system() == 'Windows':
                 platform_tag = 'win_amd64'
             elif platform.system() == 'Linux':
-                platform_tag = 'manylinux1_x86_64'
+                platform_tag = 'manylinux_2_31_x86_64'
             elif platform.system() == 'Darwin':
                 platform_tag = 'macosx_10_11_x86_64'
             return a, b, platform_tag