gnu: poppler: Update to 0.72.0.

gnu: poppler: Update to 0.72.0.

* gnu/packages/patches/poppler-CVE-2018-19149.patch: Delete file.
* gnu/packages/patches/inkscape-poppler-compat3.patch,
gnu/packages/patches/texlive-bin-luatex-poppler-compat.patch,
gnu/packages/patches/texlive-bin-pdftex-poppler-compat.patch,
gnu/packages/patches/texlive-bin-xetex-poppler-compat.patch: New files.
* gnu/local.mk (dist_patch_DATA): Adjust accordingly.
* gnu/packages/pdf.scm (poppler): Update to 0.72.0.
[replacement]: Remove field.
(poppler/fixed): Remove variable.
* gnu/packages/inkscape.scm (inkscape)[source](patches): Add
'inkscape-poppler-compat{3..5}.patch'.
* gnu/packages/tex.scm (texlive-bin)[source](patches): Update
'texlive-poppler-compat.patch'.  Add
'texlive-bin-{lua,pdf,xe}tex-poppler-compat.patch'.
* gnu/packages/emacs.scm (emacs-pdf-tools)[source](modules, snippet): New
fields.
* gnu/packages/scribus.scm (scribus)[source](patches): Add upstream patch origins.
[source](modules, snippet): New fields.
* gnu/packages/libreoffice.scm (libreoffice)[source](patches): Add three
upstream origins.
[source](snippet, modules): New field.