Revision 3623

* Autoconf: require at least a C++11 compliant compiler.

* gig.cpp/.h: GIG FORMAT EXTENSION: Added attributes
  DimensionRegion::LFO1WaveForm, DimensionRegion::LFO2WaveForm and
  DimensionRegion::LFO3WaveForm, which allow to override LFOs'
  default wave form (e.g. saw or square instead of the default wave
  form which was always sine in the original Gigasampler/GigaStudio
  software).

* gig.cpp/.h: GIG FORMAT EXTENSION: Added attributes
  DimensionRegion::LFO1Phase, DimensionRegion::LFO2Phase and
  DimensionRegion::LFO3Phase, which allow to move the start point
  horizontally of the LFOs' waves on the time axis
  (0° ... 360°).

* gig.cpp/.h: GIG FORMAT EXTENSION: Added attribute
  DimensionRegion::LFO3FlipPhase (the original Gigasampler/GigaStudio
  software only had that flip phase option for LFO1 and LFO2).

* gig.cpp/.h: Added method DimensionRegion::UsesAnyGigFormatExtension()
  (however only as private method yet, see comments on method why).

* src/tools/gigdump.cpp: Print dimension region properties
  LFO1WaveForm, LFO2WaveForm, LFO3WaveForm, LFO1Phase, LFO2Phase,
  LFO3Phase, LFO1FlipPhase, LFO2FlipPhase and LFO3FlipPhase.

* Bumped version (4.2.0.svn1).