x86: fix type-based size calculations in array writes / reads
x86: fix pre-{inc,dec}rement for more complicated types
x86: simplify array byte counting using a subroutine
x86: fix compilation of &(a[v]) for multiple-star-typed a
remove unused variable
x86: implement implicit conversions in assignments
type analyzer: typeof(-X) = typeof(X)
parser: reinstate "Comparison operators are not associative"
tweak/update x86 docs