Removed underscores from the AVX-512 names in `CPU_Feature` to make them match their equivalent LLVM target features. Removed 4FMAPs and 4VNNIW as there aren't matching LLVM target features.
It's possible for the return string to be longer than 128 characters
these days, so I've increased it to 1024, same as the other BSDs.
SYSCTL was otherwise erring out due to lack of buffer space.
1. fix the `linux.open` call, passing `{ .RDONLY }` becomes `0x00000001`
while `RDONLY` is supposed to be `0x00000000`
2. fix the case where `/etc/os-release` starts with `PRETTY_NAME`
`strings.index` was used but was checking `> 0` while `0` is valid
3. remove unneccesary temporary allocations
4. simplify the logic
`c/frontend/tokenizer`:
add proper "Example:" header to demo example code,
removed empty lines.
`container/bit_array`:
moved comment before package;
aligned narrative lines to left margin;
converted case lines into bulleted lines ("- ");
converted individual examples to single-tab-indented preformatted text.
`dynlib`:
removed "//+build ignore" line;
added newline at EOF.
`image/netpmb`:
converted indented lines of "Reading", "Wrting" and "Some syntax..." into bulleted lists;
"Formats" indented lines kept as they are as the preformatted text seems relevant to keep the alignments;
doubly indented lines kept as single-indented to keep them different (as the format does not allow for two-level bulleted lists);
removed empy lines.
`os/os2`: WIP, not modified
`sys/info`:
removed "//+build ignore" line;
converted tab-indented initial description into regular left-margin comment;
moved uncommented sample code within the doc comment as an "Example:";
moved simple- and double-tabbed separate comments with sample Windows and macOS outputs within the doc comment as bulleted headlines with preformatted output listings;
removed now empty comments and blank lines after the package line.
`text/i18n`:
removed "//+build ignore" line;
moved the pacakge line at the end;
de-indented the tab-indented introductory narrative;
moved sample code comments into the doc comment as tab-indented code with a proper "Example:" heading;
removed "```" MD attempts at code formatting.
`text/table`:
unindented the comment lines of a descriptive kind;
headlines of major subdivisions are marked as bold;
kept code samples as tab-indented preformatted text (as there are several of them, the standard "Example:" and "Output:" headings cannot be used) removing the "```" MD attempts at code formatting;
removed in-between blank lines.
Someone ran into this on Discord, so adopt the same workaround that
chrome did, by checking both OSXSAVE and XSAVE before calling XGETBV.
The old way of detecting AVX is correct per Intel, but such is life.
