Synchronize with the following revisions of the English version:
hackers.sgml 1.15
hardware.sgml 1.16
misc.sgml 1.15
network.sgml 1.22
preface.sgml 1.31
commercial.sgml 1.4
x.sgml 1.7

PR: 11001, 11002, 11025, 11026, 11027, 11042, 11043
Submitted by: Andrey Zakhvatov <andy@icc.surw.chel.su>