py-serpent: update to 1.41, support new pythons

[barracuda156]

Description

Update, drop archaic pythons 3.x, support new ones.

Type(s)

• bugfix
• enhancement
• security fix

Tested on

macOS 10.6
Xcode 3.2

Verification

Have you

• followed our Commit Message Guidelines?
• squashed and minimized your commits?
• checked that there aren't other open pull requests for the same change?
• referenced existing tickets on Trac with full URL?
• checked your Portfile with port lint --nitpick?
• tried existing tests with sudo port test?
• tried a full install with sudo port -vst install?
• tested basic functionality of all binary files?
• checked that the Portfile's most important variants haven't been broken?

[macportsbot]

Notifying maintainers:
@smithsp for port py-serpent.

[smithsp]

I am no longer using MacPorts, so I cannot check these changes, but these changes look fine to me.

[smithsp]

Does @barracuda156 want to be the maintainer now?

[barracuda156]

@smithsp Thank you. Maybe make the port nomaintainer for now? I seldom deal with Python myself; the reason for several updates and new ports for Python from my side in last couple of days is to implement building of one specific port.

[barracuda156]

@smithsp Added the suggested commit.