ghc: add missing build dependencies, fix notes: PDF docs arent't built, fix typo, drop maintainership

[neverpanic]

Description

Cc: @essandess.

This is a combination of three commits:

• ghc: Add missing build dependencies
  The bootstrap variant now requires autoconf and automake to be installed
  for the build to succeed. This was caught by trace mode.
• ghc: Fix notes: PDF docs arent't built, fix typo
  The PDF documentation wasn't built in my local build with trace mode, so
  remove the line from the notes section since it points to a non-existant
  file.
  Additionally, fix a typo in the notes message.
• ghc: Drop maintainership
  I clearly don't have the time to maintain this.

Type(s)

• bugfix
• enhancement
• security fix

Tested on

macOS 10.12.6 16G2128
Xcode 9.2 9C40b

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?

[macportsbot]

Notifying maintainers:
@essandess for port ghc.

[macportsbot]

Travis Build #7777 Errored.

Lint results

--->  Verifying Portfile for ghc
--->  0 errors and 0 warnings found.

Port ghc's dependencies fail on xcode8.3. Log

The build timed out.

[essandess]

@neverpanic Thanks. This needs a line:

revision 1

Hoping this fixes the current autoreconf Issue in #4715

[neverpanic]

I would argue it doesn't need the revision 1 line. Either the port did build correctly for people (because they didn't build in trace mode and had autoconf and automake installed), or it didn't build at all, so there is no need to force a rebuild.

The maintainer change and notes change don't need a rebuild either, because those are always taken from the Portfile in-tree, not the state at install time.