svn2git repository migration

little title update

author in README.md

after svn2git; mv xqf/* .
converting README to markdown, and updating
mv .cvsignore .gitignore
autogen.sh generate symlink from README.md to README to satisfy automake
01_xpm_segfaults.patch from Debian (Lars Wirzenius)
02_ef.xpm.patch from Debian (Jordi Mallach)
04_cs_steam_applaunch.patch from Debian (Jo Shields)
10_desktop_file_fixes.patch from Debian (Jordi Mallach)
11_add_x11_libs.patch from Debian (Jordi Mallach)
12_drop_gtk1.2_check.patch from Debian (Jordi Mallach)
13_autotools_fixes.patch from Debian (Jordi Mallach)
14_fix_readline_check.patch from Debian (Sven Joachim)
15_fix_intltool.patch from Debian (Jordi Mallach)
50_spelling_fixes.patch from Debian (Jordi Mallach)
git mv .cvsignore .gitignore
updated README.md with contribution history
added Smokin'Guns, Unvanquished and Xonotic icons
add draft xonotic support
GTK+ 1.2 disappeared with the dinosaurs
use -ldl to find dlsym at linking time