Replace __ImageBase.  Save + load window position.

Instead of using the __ImageBase global variable, use the
GetModuleHandle(NULL) function to get the exe's HMODULE/HINSTANCE.
Save the window position when the game is closed and restore it when it
is opened.  Defaults to being centered on the desktop.
Fix reading hexadecimal in TPTScriptInterface

Instead of subtracting 'A', subtract 'a'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
LoadWindowPosition has a better default position

LoadWindowPosition now positions the window on the nearest monitor if
the window is not inside a monitor.
fix tpt.log so that when called multiple times, it doesn't overwrite the text
better luacon_geterror
print returned values; implicit return in console; console source
allow multiline code input, command will be executed when enough code given
Merge pull request #132 from mniip/lua2

Some lua fixes
New element: Tungsten, very high melting point
Merge pull request #130 from mmbob/master

Save window position when closed
set window position before displaying it
make GOLD sparkle slightly, and it kills NEUT
fix crash on non-string error in step and other functions
mniip: fix crash on non-string error in step and other functions
change descriptions of many elements to be more consistent, contain more info, and be more helpful.
fix some descriptions
update introtext / readme a little
update with latest rules, fix grammar, fixes #126