Framsticks

Use qsort_r() substitute when not available (Android)

Follow-up to r897: A workaround for Android bug in vsnprintf() and vsprintf() in SString, ​https://github.com/android-ndk/ndk/issues/879

Removed Part's "visual thickness" property

Ensure that when stdin/stdout/stderr are not supported (e.g., Android apps), the source does not use them (conflicts with MFILE...)

One less compiler warning about assignment/comparison

Fixed comparison for compilers with default char = signed

Added a demo program to scale a Model and a simple test

test results updated

Updated test results after changes to evol_test and fS

• fS: comma as an intuitive separator in genotype instead of weird symbols ;'
• other minor refactorizations

Added a number of model geometry criteria to evolution

fS: refactoring

fL: more legal characters allowed in syntax coloring

Separated Pt2D

#defined ARRAY_LENGTH(x) replaced by std::size(x) since C++17

Workarounds for Embarcadero 10.3u3 compiler bug and incompatibility