Continue development.
Also install auth/ subdir and genrestapicredentials.

Thanks Glenn Martin for the report.
Mention default admin password in het manual.

Thanks Glenn Martin for reporting.
Remove checks for bisonc++/flexc++ from configure and add their
versions to generated files at time of generation.

Bisonc++/flexc++ are only needed during 'make dist' which should
never need to be run by users installing the system. Also at 'make
dist' we have no configure yet, so we cannot depend on using
etc/config.h for storing version information.
Fix d003189d: create www/auth directory before installing files there.
Cleanup all processes before exiting

This should prevent forkbombs or other weird cases where a process has
detached itself from runguard and doesn't get killed normally.
Only execute JSONcpp library check when building submit client
and throw errors when required libraries are not found.
Add git to list of required packages for development.
Tweak makefiles:
- make sure all,build are supersets of other targets
- remove 'dist' target from build dependencies
- print warning when submit client is disabled but make requested.
- config target only applies to etc directory
- generate compile/compare/run script zips with make dist
Remove obsolete Cygwin check.
Let maintainer-conf depend on dist to not have to execute that manually.
Detect C++ preprocessor to make sure that gmpxx.h header
is detected properly both by preprocessor and compiler.
Detect apache group from /etc/group entries instead of default www-data.
Fix HTML by replacing teamid=X attribute by 'id=team:X' and
change scorethisisme to class to remove id conflict.
Clean up dist generated files under sql/.
Add stub config.h for compare and float scripts, since it is not
available yet when running 'make dist'.
Change configure option help strings to default toggle.
Make compiling submit,checktestdata statically against libraries
a configure option and turned off by default.
Document --enable-static-linking configure option.
Document in comments that when the main program exits, all children
will be killed.