Report HTTP error message if we get an error during login

git-svn-id: http://pidgin-opensteamworks.googlecode.com/svn/trunk@97 8ca6c67d-4297-256d-f884-781da6d5760b
Remove compiler warning about unused variable

git-svn-id: http://pidgin-opensteamworks.googlecode.com/svn/trunk@98 8ca6c67d-4297-256d-f884-781da6d5760b
Handle expired access_token and invalid SteamGuard tokens better

git-svn-id: http://pidgin-opensteamworks.googlecode.com/svn/trunk@99 8ca6c67d-4297-256d-f884-781da6d5760b
Version bump 1.5

git-svn-id: http://pidgin-opensteamworks.googlecode.com/svn/trunk@100 8ca6c67d-4297-256d-f884-781da6d5760b
Add 1.5 downloads for Windows, 32-bit Linux, source

git-svn-id: http://pidgin-opensteamworks.googlecode.com/svn/trunk@101 8ca6c67d-4297-256d-f884-781da6d5760b
Added a zip full of icons for easy extracting on Windows

git-svn-id: http://pidgin-opensteamworks.googlecode.com/svn/trunk@103 8ca6c67d-4297-256d-f884-781da6d5760b
Added Linux 64-bit version of v1.5 (thanks, Maiku!)

git-svn-id: http://pidgin-opensteamworks.googlecode.com/svn/trunk@105 8ca6c67d-4297-256d-f884-781da6d5760b