Added ballmer's image
Minor fixes
Initial files for gnu toolchain presentation
Merge remote-tracking branch 'sams/master'
Added strings manipulation slides
Fixed lecture about variables
gcc and ld slides
Some fixing of linker slides
Merge branch 'master' of https://github.com/d4s/linux_courses
-rpath added
Added example with sequence of libs linking
Added ballmer's image
Minor fixes
[SS] fix typos
Merge branch 'master' of git://github.com/d4s/linux_courses