AMIGAOS4: replace package lha to zip
TINYGL: Rename glColor3fv to tglColor3fv

Linking TinyGL and OpenGL into the same binary could cause conflicts
because both have a glColor3fv function.
It is currently not used in ResidualVM, so it is safe to change this.
EMI: Make the MD5-check for german EMI use CD1s VoiceAll.m4b
EMI: Refactor ranges sound volume handling

- LUA code uses a range of 0 .. 100
- the LUA group volumes are in the range 25 .. 100, otherwise the sound
  group is muted
- residualvm engine uses a range of 0 .. Audio::Mixer::kMaxChannelVolume
- do all conversion in lua_v2_sound.cpp
- all other parts of the engine will solely use the engine internal
  range
- when reading/writing the registry residualvm continues to use
  a special conversion for compatibility with the volume settings
  of the residualvm engine settings
- proper handling of volumes close to 0.0f in SoundTrack::updatePosition()
EMI: Set movie volume to SFX volume setting

- movies are played as kPlainSoundType
- set the kPlainSoundType volume to the same value as
  the kSFXSoundType volume