Convert CRLF to LF line endings

These files were revealed when .gitattributes had the
following entry:
* text eol=lf

Apparently, if this entry is present and text files exist
that contain CRLF, git will behave extremely annoying.
Merge pull request #182 from toxeus/fixCRLFtoLF

Fix CRLF to LF line endings
Move bigint to /deps/