autoconfiguration tests. Some versions of gcc care enough about ANSI C
to complain about this.
Use the Linux install hierarchy conventions on other Unices as well.
XKeysymToString returns NULL on unknown keysyms, which is not a valid
std::string initializer.
There appears to be some disagreement regarding the second parameter
to iconv(). Some versions/installations have it as const, others don't.
Unfortunately, due to wonderful C++ brain damage, implicit conversion
from const to non-const doesn't work here.
git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@5945 8ced0084-cf51-0410-be5f-012b33b47a6e
