Trim lines a bit to fit width

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

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# Changes to be committed:
#	modified:   perf-collabsummit-2015.tex
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#	perf-collabsummit-2015.aux
#	perf-collabsummit-2015.log
#	perf-collabsummit-2015.nav
#	perf-collabsummit-2015.out
#	perf-collabsummit-2015.pdf
#	perf-collabsummit-2015.snm
#	perf-collabsummit-2015.toc
#	perf-collabsummit-2015.vrb
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