Import mupdf from Gentoo
Add epatch_user to app-text/mupdf

I've got a custom patch that I want applied to mupdf, but I can't do
that because epatch_user doesn't appear to be called from
src_prepare().

This just adds epatch_user to the end of every mupdf ebuild.  I'm not
sure if this is the right way to go about this, but it appears to at
least be somewhat working...
Update sys-devel/pconfigure to 0.7.1
Create dev-libs/gitdate 0.0.1

This is a simple date parsing library.
Re-number vcddiff
Import libguestfs from gentoo
Update libguestfs to depend on >=augeas-1.0.0

This change is specified by libguestfs's autoconf

checking for AUGEAS... no
configure: error: Package requirements (augeas >= 1.0.0) were not met:

Requested 'augeas >= 1.0.0' but version of augeas is 0.10.0