Describe makefile in TMR Demo
Fix Zybo PMOD figure
Update http links
Fix #s in EE CLI listing

The latter worked before... but easily become broken with changes of
Gitlab's configuration/version.

Addresses Issue #74

Addresses Issue #73

Previously, in dbdec061, we looked at the wrong field's type.
Also, fix non-boolean use of 'depends_on' in _sanitize_fiu of Settings.pm.

When everthing else is given absolute, using a width relative to
\textwidth easily produces problems...

Added functionality to automatically spawn PTY pair.
Can now replace a CONF_DONE message by an UNDERRUN.

Command line used was:

find * -type f \( -name "*.pm" -or -name "*.pl" -or -name "*.c" -or -name "*.v" -or -name "*.vhd" -or -name "*.psl" \) -print0 | parallel -q -0 sed -ri -e 's/^([[:blank:]]*[^[:blank:]]+)([[:blank:]]+)(https:\/\/embsys.technikum-wien.at\/projects\/vecs\/fiji)/\1\2\3\n\1\n\1\2The creation of this file has been supported by the publicly funded\n\1\2R\&D project Josef Ressel Center for Verification of Embedded Computing\n\1\2Systems (VECS) managed by the Christian Doppler Gesellschaft (CDG)./g'

The target to produce an intermediate .aux file for latex documents
was removed in 071d7b5c to simplify the build without taking the overall
docs/ makefile into account. The latter relies on a destinct target for
.aux files.
This commit adds it back but makes sure that failed attempts to build it
still get retried by using pdflatex' drafmode (which does not write the
PDF file itself).

Also, fix some other minor issues in the makefile and the generation of
the directory of acronyms.