Fix android build after removal of indev and math mapgen
Add srollbar formspec element
Fix flipped textures for drawtype "glasslike"
Fix indexing error in timer processing
Permit non-integer sizes for item_image[]
Make tooltip_show_delay=0 work
Fix error handling on inconsistent client ready message
Fix android makefile to provide a correct dummy githash if detection fails
Fix texture hack in fences.
Fix texture glitches for plants with visual scale > 1.0 (jungle grass).
Speedup mapblock_mesh
Remove vector assertions

These were initially added to get tracebacks for invalid vector errors, but it
didn't work and tracebacks have since been properly fixed in the core.