ios: turn on more warning messages and start correcting them

memory leak in hwform.cpp (issue #386)

fix compiling hw for ios (was looking for the wrong math.h and used an old variable name)

*sigh*

Seems to me placing hogs does not need 5s since it is a fixed interval now. Maybe if placing hogs was ever 0 seconds or something.

Oops

Make pas2c even smarter. Now uIO.c compiles fine, and only 1 warning when compiled with -Wall (clang).

- Don't crash on back press, but shutdown hedgewars - enable volume up/down/mute buttons

- Added support for keyboards on android - tiny patch for android/sdl tracks backspace correctly now - Added SDL_SCANCODE_X constants in uKeys - First attempt at making the touch interface and keys input work side by side

- Return of the F<numbers> in the ammomenu - Cursor is now hiden on touch interfaces, rather than hidden on landscape ammomenu

- Remove support for variables in command handlers - Make parameter to RegisterVariable typed instead of just pointer - Catch a bug due to wrong type passed to RegisterVariable

Fix parsing of exit() call without parameters

Move all strings into constants to make them of string255 type

Many small improvements to pas2c