py-sip: various fixes and tweaks for correctness and brevity

[michaelld]

Closes: https://trac.macports.org/ticket/58195

Description

various fixes and tweaks for correctness and brevity, including the sipdir & other fixes.

Type(s)

• bugfix
• enhancement
• security fix

Tested on

macOS 10.14.3 18D109
Xcode 10.1 10B61

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?
• tried existing tests with sudo port test?
• tried a full install with sudo port -vst install?
• tested basic functionality of all binary files?

[michaelld]

@Veence Please test / verify for PyQt5. It works for me on 10.14, but more testing is good. I'll also do some testing on older OSs tomorrow.

[macportsbot]

Travis Build #5585 Passed.

Lint results

--->  Verifying Portfile for py-sip
--->  0 errors and 0 warnings found.

Port py27-sip success on xcode10.2. Log
Port py-sip success on xcode10.2. Log
Port py34-sip success on xcode10.2. Log
Port py35-sip success on xcode10.2. Log
Port py36-sip success on xcode10.2. Log
Port py37-sip success on xcode10.2. Log
Port py27-sip success on xcode9.4. Log
Port py-sip success on xcode9.4. Log
Port py34-sip success on xcode9.4. Log
Port py35-sip success on xcode9.4. Log
Port py36-sip success on xcode9.4. Log
Port py37-sip success on xcode9.4. Log
Port py27-sip success on xcode8.3. Log
Port py-sip success on xcode8.3. Log
Port py34-sip success on xcode8.3. Log
Port py35-sip success on xcode8.3. Log
Port py36-sip success on xcode8.3. Log
Port py27-sip success on xcode7.3. Log
Port py-sip success on xcode7.3. Log
Port py34-sip success on xcode7.3. Log
Port py35-sip success on xcode7.3. Log
Port py36-sip success on xcode7.3. Log
Port py37-sip success on xcode7.3. Log

[Veence]

@Veence Please test / verify for PyQt5. It works for me on 10.14, but more testing is good. I'll also do some testing on older OSs tomorrow.

Seems to work for me. Go ahead, thanks :)

[michaelld]

I can't find a downside to this change, so I'm going ahead and merging.