Shift to just looking for libdiscid.so to prevent future problems
if the libdiscid major gets bumped.

Index: discid/libdiscid.py
--- discid/libdiscid.py.orig
+++ discid/libdiscid.py
@@ -59,7 +59,7 @@ def _find_library(name, version=0):
     else:
         # that would be linux/UNIX-like
         # these need to prepend ./
-        lib_name = "./lib%s.so.%d" % (name, version)
+        lib_name = "./lib%s.so" % (name)
         if os.path.isfile(lib_name):
             lib_file = lib_name
 
@@ -88,7 +88,7 @@ def _find_library(name, version=0):
         elif sys.platform == "cygwin":
             lib_file = "cyg%s-%d.dll" % (name, version)
         else:
-            lib_file = "lib%s.so.%d" % (name, version)
+            lib_file = "lib%s.so" % (name)
 
     return lib_file