Fixes #1726.

Replaces intersectSegmentPolygon and intersectLinePolygon "optimized"
implementations with the more robust implementations used for intersectLine and
intersectSegments
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Formatting consistancy

build tools

Update git ignore
added "float approxLength(int samples)" to Path interface and added implementation within existing Spline-classes
Less GC in RoboVM iOS backend. Will now use a single UITouch and a single UIAcceleration instead of creating new ones on each touch/acceleration event.
extracted local variables to avoid allocation on each call
removed unused tmp2
Merge pull request #1755 from Tom-Ski/uipatch

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Merge pull request #1746 from manuel-freire/polygon-segment-intersection-fix

Fixes #1726 (precision problems in intersectSegmentPolygon and intersectLinePolygon).
Fix bug in polygon intersections
Merge pull request #1762 from manuel-freire/poly-intersection

Fix bug in polygon intersections
New "minimal" JSON-like format parsing.

Supports unquoted values which start with a number.
closes #1760
Merge branch 'origin/master'
Escape tab, CR, LF.
Useless line anymore
Merge pull request #1768 from semtiko/patch-1

Useless line anymore
fixed formatting and adapted PathTest as suggested by @Xoppa
Very Minor Update FirstPersonCameraController.java

Removed the completely superfluous private tmp2 field.
Merge pull request #1771 from Hulzenga/patch-1

Very Minor Update FirstPersonCameraController.java
These AsynchronousAssetLoaders now release their assets when finished.
adding in initial version of texture unpacker.