fix mangled help cmdline option spec

from overzealous header rewriting
fix chdir retval interpretation
fix faction lib file paths
canonicalize SQL column names as lowercase
fix overzealous include file repath
add shell script to make empty required dirs in lib dir
tiny gratuitous code tweak
code spellfix garotte -> garrotte
grammar fix in murder
grammar fix in thief tracking
change task class from taskData to TTask
change using std::min/max to direct namespace spec
change using std::min/max to direct namespace spec in misc/extern.h
split plant cmd into separate file from plant task
add namespace to min/max call in compare.cc
more min/max namespacing
define guard fix in util/sstring.h
using cleanups (min/max, vector)

* remove all 'using' in random source files
* normalize the codebase towards plain min/max w/header declaring "using"
* add std:: prefix to vector declarations
* also rename objs_blind.cc to objs_blinder.cc (since that's the weapon
  name)
finish taskData -> TTask rename
finish garotte->garrotte rename