Add stdio.h to SampleBuffer.h header

Caused a weird compilation error on Linux
Should ignore versioned zipfiles
Make versioned release zipfile
Comment and improve release script
Remove unused imports
Fix a ton of warnings, mostly with types

Much stricter now about unsigned variables, changed several function and type
declarations to have proper signage.
Remove website macro, unused
Add #include <limits.h>

Used for INT_MAX, not sure if this is x-platform
Remove unused DEFAULT_TIME_DIVISION macro
Sprinkle some clang pragma sugar over code

Ignore a few unused parameter, imports, etc. Really helps with accurate
inspections from AppCode.
Fix a few small memory leaks
Add assertTimeEquals assertion

If fails, will just print out warning but not fail a test. These timing tests
fail quite often, especially in debug builds. If the value is *way* off, then
the programmer should know to diagnose it, otherwise it's not worth failing
the whole suite over.
Clearer use of compiler flags for unix
Fix a few compiler warnings
Do some easy TODO's
No compiler warnings on both Mac & Linux!
Should use mkdtemp instead of mkstemp
Version checking for FXP presets

If a version mismatch is encountered, only a warning statement is printed.
Eliminate senseless global variable
Plugin's absolute path now a field, not a method