Add log message when compilation fails and reduce messages when
fetching new executable scripts.
Add static C++ libraries to yum install list.
Add build-scripts Makefile rule to compile executable scripts.
Useful e.g. for testing and submitting Coverity scan.
Fix syntax typo in previous commit a99a719e.
Add notes to admin manual about phpmyadmin in EPEL and configure
options to set sysconfdir=/etc and localstatedir=/var.
Fix dependency of executable script zipfiles on generated config.h.
Update jscolor to upstream version 1.4.3.
Update Ace editor to latest upstream version 1.1.6 (2014.08.17).