lazarus: variants for GUI backends; allow building on powerpc

[barracuda156]

Description

@kamischi Could you please take a look?

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 in commit message?
• 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:
@kamischi for port lazarus.

[reneeotten]

@kamischi you want to comment on this PR? If there is no response in the next few days I will merge it, provided that @barracuda156 resolves the conflicts.

[kamischi]

Looks reasonable to me. I just do not have the time for thorough tests. It corresponds well to what I did long time ago for fink packages. So, give it a go.

[barracuda156]

Well, I can’t just blindly rebase the changes, since version was updated from 3.4.0 to 3.6.0.
Gonna finalize this once confirm the build.