Fix curves.pl script to build
The script, `tests/scripts/curves.pl` was broken, and did not build due to the
make command not having been updated with the change from polarssl to mbed TLS.
diff --git a/tests/scripts/curves.pl b/tests/scripts/curves.pl
index 1f489a3..25e43d8 100755
--- a/tests/scripts/curves.pl
+++ b/tests/scripts/curves.pl
@@ -34,7 +34,7 @@
system( "scripts/config.pl unset $curve" )
and abort "Failed to disable $curve\n";
- system( "make polarssl" ) and abort "Failed to build lib: $curve\n";
+ system( "make lib" ) and abort "Failed to build lib: $curve\n";
system( "cd tests && make" ) and abort "Failed to build tests: $curve\n";
system( "make $test" ) and abort "Failed test suite: $curve\n";