Made CTTxbxContent implement ContentAccessor
first-line indent support for pdf
better cell margins for pdf
utf-8 in font names

I have encountered a couple of issues during pdf conversion when users
were embedding Chinese fonts that were using utf-8 names(line <w:font
w:name="文鼎Ｐ... in fontTable.xml). Please find the following diffs that
fixed these
issues for me(i've tried to make as small changes as possible:

1. Conversion.java: otherwise font name's encoding is reset to default
and thus lost when it's not utf-8.
2. ObfuscatedFontPart.java+PhysicalFonts.java: fontsInUse store font
names as they were in fontTable.xml and name retrieved via
PhysicalFont.getName() is different in that case.
diff doesn't work for 5000+ elements
docx4jexception instead of npe when attempting to load bad zip file
Merge pull request #20 from sgrachov/932843c78866da36e9a721671ea965c93aafc332

first-line indent support for pdf
Merge pull request #21 from sgrachov/20bdafd1b1879a28de5d78e4fd021f1fac223406

better cell margins for pdf (sgrachov)
Merge pull request #14 from bezda/master

FldChar support for TraversalUtils (bezda)
Merge pull request #18 from Nanocom/cttxbxcontent_contentaccessor

Made CTTxbxContent implement ContentAccessor (Nanocom)
workaround to support color:# as in <span style="color:#ff000">
skip external relationships in RelationshipsPart.getRel()

attempting to invoke the method getRel() in the presence of external
relationships will always result in an IllegalArgumentException
thrown by org.docx4j.openpackaging.URIHelper.resolvePartUri
Merge pull request #22 from sgrachov/master

utf-8 in font names; diffx 5000+; color
Just a method for logging from XSLT
Support for od:RptPosCon (retain/delete a content control sensitive to
position in a repeat)
Distinguish repeat instances, so "and" between repeat items still works
when a repeat is re-used.

Proof of concept of doing bind step without XSLT (WIP).
Be consistent with org.docx4j.jaxb.Context in how we display diagnostic info about version of JAXB being used.
Handle paragraph space before and after in HtmlExporterNG2 output
Handle null passed to getChildrenImpl
Merge branch 'master' of https://github.com/plutext/docx4j