Merged from trunk 5631:5649

Merged from trunk 5631:5649

make sure people call addread/addwrite/adddeny/addpredict correctly
(SpankMan)

fix tabs with patch from Grobian and bug # 161911, fix developing a bit
(WarnerBro)

Fix 'TypeError: not all arguments converted during string formatting'.
Thanks to marienz.

Fix reversed arguments.

Fix dohtml so that it continues to install files even after some fail.
Thanks to brad walker <bradmwalker@cableone.net> in bug #149745.

Document PORTAGE_LOG_FILE, update PORTAGE_TMPDIR path which now includes
CATEGORY, and lots of style/syntax fixes.  Thanks to Arfrever Frehtes
Taifersar Arahesis <FFTA@WP.PL> from bug #161979.

For bug #161975, document the fact that GENTOO_MIRRORS supports mounted
filesystem mirrors.

For bug #69021, add news about FEATURES="test" implying USE="test".

Disable the test phase when USE=test is masked (for consistency with the
fix for bug #69021).

Don't warn about /etc/make.profile not being a symlink if it has a
parent file.

Document DOC_SYMLINKS_DIR.

Fix alphabetical order.

svn path=/main/branches/prefix/; revision=5723