Render some builtin functions

Render unions

minor gl debug/comments

disable png screenshots on mobile for now

Support string constants

Oops, forgot file

png screenshots

Support operators declarations

Simplify converter's life

Improve rendering of function types, arrays, and more

vob* variables need to be reset

Unbreak build (change was only tested with pas2c parser, and was okay to it)

First try to compile with clang: improve renderer a bit. The result of pas2c is still far from normal C source.

Better handle switch statement

Eraser tool

Better support for strings

ios: resample the sound effects in CAF as suggested in ios sdk (100kB of space saved)

ios: refactor the code of the after-game statistics display using delegates

ios: convert audio operation from class to instance, plays better with memory

i don't understand this, but without this change audio doesn't fade on ios

remove stray pixels

ios: don't prompt restoring a game that didn't complete loading

ios, this method belongs here

ios: schemes table was being drawn on top of the table border

formatting

when focus is lost lower the volume to a minimum

by popular demand, switch Nature and Golf music (issue #383)

Convert some operators

Unwind 'with' construction

Improve rendering into C