Synchronize with English versions:
advanced-networking/chapter.sgml: 1.381 -> 1.382
cutting-edge/chapter.sgml: 1.223 -> 1.225
eresources/chapter.sgml: 1.175 -> 1.177
firewalls/chapter.sgml: 1.68 -> 1.70
install/chapter.sgml: 1.332 -> 1.333
kernelconfig/chapter.sgml: 1.164 -> 1.167
linuxemu/chapter.sgml: 1.131 -> 1.132
mirrors/chapter.sgml: 1.419 -> 1.420
network-servers/chapter.sgml: 1.86 -> 1.87
ports/chapter.sgml: 1.256 -> 1.259
security/chapter.sgml: 1.294 -> 1.296

Plus language improvements:
basics/chapter.sgml
introduction/chapter.sgml
security/chapter.sgml

Submitted by: delphij,

		Alex <delhua gmail com>,
		heromyth,
		Yan ZHU <zhuyan at staff dot sina dot com dot cn>
		Devis.Ma <devis.ma at gmail com>

Obtained from: The FreeBSD Simplified Chinese Project CVS