Add basic support for ZapfDingbats

[Snuffleupagus]

This patch adds support for the ZapfDingbats encoding, and should thus fix issues/bugs with titles like: "check marks rendered as a number (4)".

Compared to the rendering in Adobe Reader, many of the glyphs doesn't look as nice. However, it should still be a marked improvement compared to the current situation where we don't even attempt to draw the correct glyphs.

/cc @yurydelendik

Fixes #1577.
Fixes #2738.
Fixes #3032.
Fixes bug 846359.
Fixes bug 846675.

Edit: I added support for additional (depreciated) Mac OS specific dingbats glyphs, to make sure that we handle older documents correct. Note that we already, as for the "standard" dingbats glyphs, include width data for these.
Also, I found a document that can be used for testing: http://www.w3.org/Style/XSL/TestSuite/contrib/XEP/Tests/zapf-dingbats.pdf (from http://www.w3.org/Style/XSL/TestSuite/contrib/XEP/).
Should we include this as a "linked" test?

[jscodefix]

I ran tests, using the Snuffleupagus:dingbats branch, against my PDF documents, and confirmed that checkboxes are now properly displayed.

[yurydelendik]

Really good. I'll check that soon.

[Snuffleupagus]

/botio-linux preview

[pdfjsbot]

From: Bot.io (Linux)

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Command cmd_preview from @Snuffleupagus received. Current queue size: 0

Live output at: http://107.21.233.14:8877/b9a8c7899aafa7f/output.txt

[pdfjsbot]

From: Bot.io (Linux)

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Success

Full output at http://107.21.233.14:8877/b9a8c7899aafa7f/output.txt

Total script time: 0.78 mins

Published

• Viewer: http://107.21.233.14:8877/b9a8c7899aafa7f/web/viewer.html
• B2G Viewer: http://107.21.233.14:8877/b9a8c7899aafa7f/extensions/b2g/content/web/viewer.html
• Extension: http://107.21.233.14:8877/b9a8c7899aafa7f/extensions/firefox/pdf.js.xpi
• Extension (AMO): http://107.21.233.14:8877/b9a8c7899aafa7f/extensions/firefox/pdf.js.amo.xpi

[yurydelendik]

/botio test

[pdfjsbot]

From: Bot.io (Windows)

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Received

Command cmd_test from @yurydelendik received. Current queue size: 0

Live output at: http://107.22.172.223:8877/972c49c471903e1/output.txt

[pdfjsbot]

From: Bot.io (Linux)

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Received

Command cmd_test from @yurydelendik received. Current queue size: 0

Live output at: http://107.21.233.14:8877/e0f92ec56e92eb8/output.txt

[yurydelendik]

I found a document that can be used for testing: http://www.w3.org/Style/XSL/TestSuite/contrib/XEP/Tests/zapf-dingbats.pdf (from http://www.w3.org/Style/XSL/TestSuite/contrib/XEP/).
Should we include this as a "linked" test?

Yes (as a linked test)

[pdfjsbot]

From: Bot.io (Windows)

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Failed

Full output at http://107.22.172.223:8877/972c49c471903e1/output.txt

Total script time: 2.81 mins

• Font tests: FAILED
• Unit tests: Passed
• Regression tests: FAILED

Image differences available at: http://107.22.172.223:8877/972c49c471903e1/reftest-analyzer.html#web=eq.log

[pdfjsbot]

From: Bot.io (Linux)

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Failed

Full output at http://107.21.233.14:8877/e0f92ec56e92eb8/output.txt

Total script time: 22.57 mins

• Font tests: Passed
• Unit tests: Passed
• Regression tests: FAILED

Image differences available at: http://107.21.233.14:8877/e0f92ec56e92eb8/reftest-analyzer.html#web=eq.log

[yurydelendik]

/botio-linux test

[pdfjsbot]

From: Bot.io (Linux)

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Received

Command cmd_test from @yurydelendik received. Current queue size: 0

Live output at: http://107.21.233.14:8877/d144e2adc0874bd/output.txt

[yurydelendik]

Text from http://www.w3.org/Style/XSL/TestSuite/contrib/XEP/Tests/zapf-dingbats.fo:

<?xml version="1.0" encoding="ISO-8859-1"?><!-- 
    (c) RenderX, 2000 
    This file makes part of the RenderX XSL FO Test Suite. Permission is 
    granted to copy and modify this file as a whole or in part, provided 
    that any work derived from it bear a reference to the original
    document.
  -->

[pdfjsbot]

From: Bot.io (Linux)

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Failed

Full output at http://107.21.233.14:8877/d144e2adc0874bd/output.txt

Total script time: 22.47 mins

• Font tests: Passed
• Unit tests: Passed
• Regression tests: FAILED

Image differences available at: http://107.21.233.14:8877/d144e2adc0874bd/reftest-analyzer.html#web=eq.log

[yurydelendik]

/botio makeref

[pdfjsbot]

From: Bot.io (Linux)

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Received

Command cmd_makeref from @yurydelendik received. Current queue size: 0

Live output at: http://107.21.233.14:8877/8ca21e51c140cd3/output.txt

[pdfjsbot]

From: Bot.io (Windows)

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Received

Command cmd_makeref from @yurydelendik received. Current queue size: 0

Live output at: http://107.22.172.223:8877/9cad8d64ba18bcb/output.txt

[yurydelendik]

Thank you for the patch

[pdfjsbot]

From: Bot.io (Windows)

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Failed

Full output at http://107.22.172.223:8877/9cad8d64ba18bcb/output.txt

Total script time: 0.98 mins

• Lint: Passed
• Make references: FAILED

[pdfjsbot]

From: Bot.io (Linux)

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Success

Full output at http://107.21.233.14:8877/8ca21e51c140cd3/output.txt

Total script time: 22.44 mins

• Lint: Passed
• Make references: Passed
• Check references: Passed

[yurydelendik]

/botio-windows makeref

[pdfjsbot]

From: Bot.io (Windows)

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Received

Command cmd_makeref from @yurydelendik received. Current queue size: 0

Live output at: http://107.22.172.223:8877/8e8450cc0ee30c7/output.txt

[pdfjsbot]

From: Bot.io (Windows)

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Success

Full output at http://107.22.172.223:8877/8e8450cc0ee30c7/output.txt

Total script time: 20.86 mins

• Lint: Passed
• Make references: Passed
• Check references: Passed