typo fix: chromomsome

Fix various GCC 13 warnings and errors

Due to improvements in system and/or compiler header cleanliness,
where previously ParseTools.{cpp,h}'s headers have included <cstdint>
as a byproduct, this no longer occurs. Hence:
 - Ordinary unsigned is appropriate for the int2str() variable anyway;
 - Get CHRPOS from BedtoolsTypes.h instead of typedeffing it ourselves;
 - ParseTools.cpp's isHeaderLine() does use uint32_t, so include <cstdint>
   from the .cpp file for good measure.

Assignment operators should not be virtual (avoids "Record::operator=
was hidden" warnings). List member initialisers in the same order in
which they are declared (avoids "_testLastQueryRec will be initialized
after _runToDbEnd" warnings).

Avoid dangling reference to temporary string object

add test for (fixed) #919

fix coverage formatting when scale == 1

closes #371

use htslib/faidx.h to get fasta sequences

genomecov: use integer when scale == 1.0

see #371 #1015

#56

Cherry-pick htslib#1258

Ignore Windows-style line termination in genome files

Add utility function to trim any CR or LF characters at the end of a
string, and use it in NewGenomeFile::loadGenomeFileIntoMap() which did
not previously accept Windows-style CRLF-delimited files.

(There are several other file reading classes that do their own newline
trimming. TODO Change these other trimmers to use this function too.)

Cherry-pick htslib commit 515f6df8f7f7 ("Remove compressBound
assertions. (PR #1258)").

This fixes compressBound() assertions when running bedtools testsuite
on an IBM Z machine with hardware-accelerated zlib.

slopBed: usage grammar/whitespace fixes

fix bug 975