intermediate CodeC sequence by setting `f_state` only if in
CodeA/B & checking before adding extended mode switch (cf
OkapiBarcode commit [9ce6dcc], props Daniel Gredler)
DATAMATRIX: in FAST_MODE re-process any buffered X12 characters
when mode changes from X12 (cf OkapiBarcode commit [fb7981e],
props Daniel Gredler)
CODABLOCKF: allow for FNC4 when estimating no. of rows required
CODE16K: make sure row calculation accurate by dispensing with
glyph estimate & using actual codeword count
CODE16K: ensure initial mode selection allows for extended
characters
vector.c: add `z_alloca()` cast for `first_row_rects` (ticket
#272)
MSVC project files: remove incorrect "CompileACpp" setting from
libzint project files (ticket #272)
bwipp_dump.ps: fix 2/4-track processing; update to latest BWIPP
manual/man page/GUI: Code 16k -> Code 16K
GRIDMATRIX, HANXIN, MAXICODE, MICROPDF417, PDF417, QRCODE, RMQR, ULTRA
RMQR: fix ECI encoding (wrong bit length for indicator)
MICROQR: check versions M1 and M2 for allowed characters so as to give
better error messages
DOTCODE: some small optimizations
common.c: add is_chr(), segs_length(), segs_cpy()
CODEONE/CODE128/DOTCODE/GRIDMATRIX/HANXIN/MAXICODE/QRCODE/ULTRA: add
namespace prefixes to static funcs/data
includes: use Z_ prefix, unuse double underscore prefixes (guard defines)
manual.txt: compress some tables using double/treble column sets
