Merge pull request #84 from caxap/master

Added \x00 symbol to pdf whitespaces. Slightly refactored utils module.
fix merging 3 and more resources with equal name
Merge pull request #86 from lucky-user/master

fix merging 3 and more resources with equal name
fix to work on pypy2.2.2
More tolerant Xref Parsing - by speedplane
use __new__ in NameObject
Merge pull request #90 from letolab/pypy2.2.1_fix

fix to work on pypy2.2
Notes for Patch 1.21
NameObject str __init__, .gitignore
Merge branch 'master' of https://github.com/mstamy2/PyPDF2
Never mind empty NameObject.__init__
Merge pull request #91 from switham/master

Remove unneeded NameObject.__init__ method in generic.py.
Fixed possible infinite loop when using Python 3 to merge pages
Merge pull request #94 from commx/master

Fixed possible infinite loop when using Python 3 to merge pages
Fixed error when calculating height in scaleTo() method
Merge branch 'master' of git://github.com/mstamy2/PyPDF2
Fixed a bug in DictionaryObject with python 3

Dict only has a "iteritems" method in python 2, python 3.
But since this code has the same behaviour as dict, it's not necessary to remplement it, so I just killed it.
Fix https://github.com/mstamy2/PyPDF2/issues/97 by checking for NULL string, i.e., ord == 0.
Used utils.ord_()
Merge branch 'speedplane-master'