Remove ucore_ prefix from headers and source files

src/version.c.in

@@ -0,0 +1,10 @@
+//Various info about the version and build.
+//The SConscript file substitutes these at build time
+
+const int ucore_version_major = @version_major@;
+const int ucore_version_minor = @version_minor@;
+const int ucore_version_patch = @version_patch@;
+
+const char ucore_version_str[] = "@version_major@.@version_minor@.@version_patch@.@version_revision@";
+const char ucore_build_host[] = "@build_host@";
+