Slightly modify the public domain license to keep it in the public domain, but make it clear that even when dedications might not be recognized that the code is still usable.  Given that this isn't dual-licensing under a different license, I'm hoping this will be acceptable.

Slightly modify the public domain license to keep it in the public domain, but make it clear that even when dedications might not be recognized that the code is still usable.  Given that this isn't dual-licensing under a different license, I'm hoping this will be acceptable.

When compiling with more restrictive compiler options
such casting from double to float will cause a warning.

Ex. GCC -Wdouble-promotion
Signed-off-by: NFilip Wasil <filip.wasil@gmail.com>

If calling stbi_write_png concurrently the static array crc_table would be shared between threads causing data-races.

fix internal names to be namspaced properly;

actually want

Add requested flag for controlling TGA RLE compression and fix a
regression when writing monochrome TGAs.

This is the same thing than STB_IMAGE_STATIC of stb_image.h.

When compiling with -O3, gcc would complain that 'linear' might not be
initialized if comp is superior to 4.

In fact passing a value > 4 is an error anyway, but gcc does not know
that.  I changed the switch case to support comp > 4.  I don't think it
should affect the performances.

rename all STBI_ config macros to STBIW_ to avoid conflict with stb_image.h

Fixes #90.

also updated the comment at the top of the file to reflect stbi_write_tga's new capabilities.